Ruben has a new puppy and wants to feed it the best possible food. He decides on an experiment where he will feed it the very best canned food plus a dietary supplement of vitamins recommended by a veterinarian. Which of the following best describes Ruben's project?
i. Ruben needs to take careful measurements of the puppy's weight and height at least once a week for it to be a good experiment.
ii. Ruben needs to use his mother's 6-year-old chocolate shar-pel to feed a standard diet so he can compare his puppy with a control dog
iii. Ruben needs to control for the amount of exercise, sunshine, water, and care that the puppy gets each week, so that they are equal from week to week.
iv. This is an example of an excellent controlled experiment as it is written, This is not an experiment-there are no controls or replicates.
Answers
The statement that best describes Ruben's project is that it needs to control the amount of exercise, sunshine, water, and care that the puppy gets each week so that they are equal from week to week.
The correct option is (iii).
Ruben needs to control the amount of exercise, sunshine, water, and care the puppy gets each week, so they are equal from week to week. This statement highlights the importance of controlling variables in a scientific experiment. By ensuring that all other factors remain constant except for the food and dietary supplement, Ruben can isolate the effects of these specific variables on the puppy's health and well-being. This control allows for a more accurate assessment of the impact of the chosen food and supplement on the puppy's growth and development. Without controlling other factors, it would be difficult to attribute any observed changes solely to the food and supplement combination.
The correct answer is (iii) Ruben needs to control for the amount of exercise, sunshine, water, and care that the puppy gets each week, so that they are equal from week to week.
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Related Questions
I need help asapppp 30 points for the right answer
Answers
Answer:
It could be business
Explanation:
Well if you think about it, band won't help him with farming and i don't think history would either. Physics is basically physical science, so I don't think that's it either. I hope this helps. God bless!
Which segment is an angle bisector?
V
48
W
48
x
U
Y
Answers
\(\Huge\bf \rightarrow \mid\mathcal{\underline{ \red{Answer}}} \mid\)
The definition of the angle bisector of a triangle is a line segment that bisects one of the vertex angles of a triangle.
In general, an angle bisector is equidistant from the sides of the angle when measured along a segment perpendicular to the sides of the angle.
1)Why pollution level decrease with depth of soil? You should
also describe how pollutant enter each layer of soil.
2)How soil health is directly related to us?
Answers
1) The pollution level decreases with the depth of soil because as pollutants move through the soil layers, they undergo processes such as filtration, adsorption, and microbial degradation, which help to reduce their concentration
2) Soil health is directly related to us because it provides the foundation for growing crops and plants, which are essential for food production, clean air, water filtration, and overall human well-being.
When pollutants enter the soil, they undergo various physical, chemical, and biological interactions. As water percolates through the soil, larger particles and contaminants are filtered out, reducing their concentration. Adsorption occurs when pollutants adhere to the soil particles, immobilizing them and preventing their movement through the soil profile. Additionally, microorganisms present in the soil can degrade or transform certain pollutants through biological processes, further reducing their levels. As pollutants move deeper into the soil, these processes continue to act upon them, resulting in a decrease in pollution levels with increasing soil depth.
Soil health is critical for sustaining agricultural productivity and ensuring food security. Healthy soil contains essential nutrients and provides a favorable environment for plant growth. It acts as a reservoir for water, regulating its availability for plants and helping to prevent water pollution by filtering out contaminants. Soil also hosts a diverse array of microorganisms that contribute to nutrient cycling, disease suppression, and carbon sequestration.
By supporting healthy plant growth, soil indirectly impacts human health by providing nutritious food, clean air, and water purification. Thus, the quality and health of soil have a direct impact on our ability to meet basic needs and maintain a sustainable environment.
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Which of the following is part of North America?
Answers
Answer:
Mexico, Canada, the United States, and Greenland
Explanation:
hope this helps!!
What is the name of the agreement that removes most tariffs between Mexico Canada and the United States
Answers
Answer:
The North American Free Trade Agreement :}
Explanation:
Do Sedimentary rocks sink or float?
Answers
Answer:sink
Explanation:sedimentary rocks form as a result of particles settling to the bottom of a body of water and cementing over long periods of time
Symmetrical ripple marks are common structures preserved in ______ sand, and can indicate the general direction of wave action. Multiple choice question.
Answers
Answer: Beach
Explanation: Symmetrical ripple marks are common structures preserved in beach sand, and can indicate the general direction of wave action.
a(n) is a gently sloping erosional surface, commonly covered with a veneer of gravel, cut into the solid rock of a mountain. group of answer choices bajada pediment cuesta arroyo playa
Answers
A Pediment is a gently sloping erosional surface, commonly covered with a veneer of gravel, cut into the solid rock of a mountain.
A pediment, sometimes referred to as a concave slope or fading slope, is a very gently sloping inclined bedrock surface. A concave surface that slopes down from the base of a taller, vanishing desert cliff, an escarpment, or the region around a monadnock or inselberg often makes up such a feature.
The western United States is notably famous for its pediments, which are often found in dry to semiarid settings. However, they may also be found in South Africa and along the Andes' front range. In more recent times, it has become clear that pediments may occur in a range of tectonic settings, including temperate and humid climates, and that the nature of the bedrock is not essential to their creation.
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One of the problems associated with computing the absolute age of Earth based on rates of accumulation of sediment is that A. removal of salts by deposition of evaporites approximately balances that addition of salts by rivers and other sources. B. radioactive decay and its heat contribution to Earth need to be taken into account. C. the salinity of the world’s oceans may not have changed much since early in Earth’s history. D. the stratigraphic record is full of gaps. E. All of the above statements are supported by the theory.
Answers
Answer:
The correct answer is B. radioactive decay and its heat contribution to Earth need to be taken into account.
Explanation:
Computing the absolute age of Earth based on rates of sediment accumulation is a complex process that requires considering various factors. While options A, C, and D may be true in their own context, they are not directly related to the problem of computing the absolute age of Earth based on sediment accumulation rates.
Radioactive decay plays a crucial role in determining the absolute age of Earth. By measuring the decay of radioactive isotopes in rocks and minerals, scientists can estimate the elapsed time since the formation of those rocks. However, it is important to take into account the heat generated by radioactive decay and its contribution to the overall energy budget of Earth.
Therefore, option B is the correct answer as it specifically addresses the requirement to consider radioactive decay and its heat contribution when computing the absolute age of Earth.
One of the problems associated with computing the absolute age of Earth based on rates of accumulation of sediment is that, here All of the above statements are supported by the theory.
Correct option is E.
The absolute age of Earth can be difficult to determine, due to several factors. Firstly, the removal and addition of salts by deposition of evaporites and by rivers and other sources, respectively, are roughly equal, making it difficult to measure a net increase in salinity over time.
Additionally, radioactive decay and its accompanying release of heat must be taken into consideration, since it has been an important source of energy for Earth since the beginning of its formation. Furthermore, the salinity of the world’s oceans is believed to have remained relatively consistent since Earth’s early history.
Lastly, the stratigraphic record is quite incomplete, with a great number of gaps making it difficult to measure sediment accumulation with any degree of accuracy. All of these factors must be taken into account when attempting to calculate the absolute age of Earth.
Correct option is E.
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The country that is nearly surrounded by India is..
A. Bangladesh
B. Bhutan
C. Pakistan
D. Nepal
E. Burma
Answers
Answer:
A. Bangladesh
Explanation:
Two- or three sentence summary of the Background Essay describing time, place, and story about The European Union: Do the benefits of membership outweigh the costs
Answers
Answer:
im in europe and i dont even know
Explanation:
Two thirds of Poles believe that the advantages of European Union membership outweigh the costs. Access to EU funds is seen as the biggest benefit, while unequal treatment of member states is the most frequently cited disadvantage.
What is European Union?The European Union (EU) is a political and economic partnership that represents a unique form of cooperation among sovereign countries.
Overall, 68% of Poles said that the benefits of membership outweigh the costs, while only 10% thought the opposite. Fourteen percent think that the two are equally balanced.
Thus, it holds true that the benefits of membership outweigh the costs.
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Why does the equatorward bending of height contours for the 500 mb level imply the presence of a trough?
Answers
The equatorward bending of height contours for the 500 mb level imply the presence of a trough because this represents a region of overall lower heights. A valley and a trough are hence equivalent in the upper air flow.
A trough is a linear structural depression with lateral length that occurs in geology. A trough can be a small basin or a natural rift, albeit it is lower than a trench. At the edge of tectonic plates, these landforms frequently form.
Trough, an extended depression in the seafloor that differs from oceanic trenches in that it is shallower, shorter, narrower, and topographically more mild. The Papuan Trough's maximum depth is 2,300 m (7,500 feet), while the Banda Trough's maximum depth is 7,440 m.
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All of the following types of agriculture
happen in California EXCEPT
Market gardening
Shifting Cultivation
Livestock ranching
Mediterranean
Answers
Answer:
California's Top 5 Agricultural Commodities
Dairy Products, Milk — $7.57 billion.
Grapes — $5.23 billion.
Almonds — $5.03 billion.
Cattle and Calves — $3.11 billion.
Strawberries — $3.02 billion.
most icelandic eruptions occur when lava pours out of long fractures, in eruptions known as
Answers
Most Icelandic eruptions occur when lava pours out of long fractures, in eruptions known as fissure.
A fissure is a hole in the Earth's surface that is long and narrow. The word "cleft" or "crack" is derived from the Latin word fissura. In the crust of the Earth, on ice sheets and glaciers, and on volcanoes, fissures appear.
An aperture or long, thin fracture in the Earth's crust is referred to as a ground fissure or an earth fissure. Ground fissures can develop due to geological faulting, earthquakes, or human activity like oil mining and groundwater pumping.
They can also develop spontaneously. Ground fissures can grow and erode by torrential rain after they have already formed. They can cause harm to property and infrastructure, including roads, underground pipes, canals, and dams, as well as pose a risk to humans and cattle who reside on the impacted surfaces.
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Width of the Atlantic Ocean In plate tectonics doctrine we assert that with the American plate moving westward and the Eurasian plate moving eastward, the North Atlantic Ocean is getting about 5 inches wider per year. Thus, when Columbus sailed for America in 1492, the Atlantic Ocean was considerably more narrow. If we say that today, Florida and Cadiz, Spain (where Columbus sailed from) are 3,000 miles apart, what distance did Columbus have to sail in 1492 to reach the New World? Give me a distance (in feet or miles) and tell me how much wider the Atlantic (at the latitude of Spain-Florida) is today than it was in 1492. Finally, write up a short summary of the multiple assumptions we are making that would skew or otherwise foul up our arithmetic?
Answers
Columbus had to sail approximately 3,000 miles to reach the New World in 1492. The width of the Atlantic Ocean at the latitude of Spain-Florida is now about 5 inches wider per year compared to 1492.
Based on the given information, the distance between Florida and Cadiz, Spain, is stated as 3,000 miles. This implies that Columbus had to sail approximately that distance to reach the New World. Additionally, it is mentioned that the Atlantic Ocean is widening at a rate of about 5 inches per year. Other assumptions that could potentially affect the accuracy of the calculations include changes in the ocean floor topography, the impact of currents and winds on the actual sailing distance, and any alterations in the latitude of Spain and Florida over time.
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sedimentary facies shift toward the sea as the sea moves out during a: multiple choice subduction. transgression. reduction. regression.
Answers
Sedimentary facies shift toward the sea as the sea moves out during option d regression.
Regression refers to the moving of the shoreline towards the sea which reveals the ocean floor otherwise submerged under the water. If a regression is major in its capacity, it could lead to the extinction and destruction of many organisms in the sea. Regression and its opposite phenomenon transgression have played an important role in extinction at mass extinction regarding as discovered in fossils.
The creation of the Panthea supercontinent during the late Paleozoic era is also regarded as a result of regression. Other mass regression events are the Permian-Triassic extinction and Cretaceous-Paleogene mass extinction.
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Which statement describes the cyclic nature of seafloor spreading?
Answers
Answer:
Seafloor spreading is a geologic course in which tectonic plates divided apart from each other creating new seafloor. The Statements that describe the cyclic nature of seafloor spreading are as follows; New oceanic crust is formed.
i need help 60 points givein
Answers
Answer:
The answers are A,B,C. D is wrong.
THINK LIKE AN ECONOMIST Can you think of at least one good reason that perhaps government should not interfere in market shortages with price-gouging laws? Your response should be 100 words or less.
Answers
Yes, there are a few good reasons why the government should not interfere in market shortages with price-gouging laws. One good reason is that price gouging laws can have unintended consequences on the economy.
For example, when the government intervenes and sets price ceilings on goods, suppliers are forced to sell their goods at lower prices than they are worth, causing them to incur losses. As a result, suppliers might reduce their production, which leads to shortages of goods in the market.
Price gouging laws might also discourage suppliers from entering the market, leading to reduced competition and increased monopoly power for existing suppliers .
Another reason is that the free market, when left to operate without interference, will automatically regulate itself. During a market shortage, suppliers will increase their prices to match the supply and demand. The increased prices signal to the suppliers to increase production, and they will do so until the market reaches equilibrium.
Thus, the market will eventually adjust to the new supply and demand levels.
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The invention of electric cars is an example of people adapting to change
in our environment. TRUE OR FALSE
Answers
Answer:
true i guess ????
Explanation:
correct me if im weong
Answer:
True
Explanation:
because environment is change per sec. by humans
PLS I NEED YOUR HELP ASAP, I'LL GIVE BRAINLIEST PLZZzZ How did the line of demarcation affect south american culture?
A. it created catholic and protestant regions.
B. it created democratic and socialist regions.
C. it created muslim and christian regions
D. it created spanish-speaking and Portuguese-speaking regions.
Answers
Answer:
D. it created spanish-speaking and Portuguese-speaking regions.
Explanation: I am pretty sure this is correct i hope this helps!
in an eclipsing binary system, how is the period of orbit determined?
Answers
Answer:
The period of orbit in an eclipsing binary system can be determined by measuring the time interval between successive eclipses. This interval is then used to calculate the period of the binary system. Additionally, the radial velocity of the stars can also be used to detect binary stars and measure their orbital period.
Explanation:
A star follows a predictable path of evolution that can be divided into stages. These stages are determined by the star's mass and the amount of fuel left in its core. The first stage is the Protostar stage. During this stage the star is composed of gas and dust that is undergoing gravitational collapse. As the gas and dust collapses, it begins to heat up and eventually forms a protostar. The second stage is the Main Sequence stage. During this stage a star has reached equilibrium between the outward pressure of its core and the inward pull of its gravity. This is the longest stage of a star's life and is where most of the star's energy is produced. The third stage is the Red Giant stage. During this stage a star has exhausted its hydrogen fuel in its core and starts to cool. As the star cools, it begins to expand and becomes a red giant. The fourth stage is the White Dwarf stage. During this stage the star has shed most of its outer layers and has become a small, dense star. This stage is the final stable stage of a star's life and is the remnant of the star. The fifth stage is the Supernova stage. During this stage a star undergoes a catastrophic explosion and is typically the end of a star's life. This stage is only observed in the most massive stars. Finally, the sixth stage is the Neutron Star or Black Hole stage. During this stage a star has collapsed and become either a neutron star or a black hole. This is the final stage of a star's life and is typically only observed in the most massive stars.Select all the possible ways in which the elevation of the surface of the Earth is increased. +Thrust faulting+Adding magma to the crust+Crustal or mantle heating beneath a region
Answers
The possible ways in which the elevation of the surface of the Earth is increased are: Thrust faulting, Adding magma to the crust and Crustal or mantle heating beneath a region.
The following are possible methods for increasing the elevation of the Earth's surface:
Thrust faulting occurs when two tectonic plates contact and one plate is pushed up and over the other, causing elevation to rise.Adding magma to the crust: When magma rises from the mantle and intrudes into the overlying crust, it bulges and rises in height. Heating beneath a region's crust or mantle: This can cause the rocks in the crust or mantle to expand and elevate, resulting in an increase in height.For such more question on heating:
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what happens when hydrogen is finished in the core of the sun
Answers
Answer:
when our sun runs out of hydrogen fuel in the core. it will contract and heat up to a sufficient degree that helium fusion can begin it end composed of carbon and oxygen with the lighter hydrogen and helium layer blow of these will occurs for stars between about 40% and 800% the sun's mass
which of the following is not a cause of habitat destruction or fragmentation? A clearing land for homes B. preserving large pieces of land C. building roadways D. logging
Answers
The correct option is B. Preserving large pieces of land is not a cause of habitat destruction or fragmentation.
In fact, it is a conservation strategy aimed at protecting habitats and ecosystems from human encroachment and disturbance.
By designating large areas as protected or conservation lands, governments and organizations work to maintain the integrity and biodiversity of these natural areas. Preservation efforts involve establishing national parks, wildlife reserves, and other protected areas where human activities are limited or regulated. The goal is to safeguard habitats, maintain ecosystem functions, and protect vulnerable species from the impacts of habitat destruction or fragmentation. Preserving large pieces of land allows for the preservation of critical habitats, the maintenance of ecological processes, and the conservation of biodiversity.
Preservation initiatives often involve collaboration between governments, conservation organizations, and local communities to ensure sustainable management and protection of these lands for present and future generations.
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which of these factors are believed to have contributed to global cooling since the end of the late paleocene torrid age?
Answers
Several factors are believed to have contributed to global cooling since the end of the late Paleocene Torrid Age, which occurred about 55 million years ago.
One factor is the decline in atmospheric carbon dioxide levels due to the chemical weathering of rocks, which removes carbon dioxide from the atmosphere and stores it in sedimentary rocks. Another factor is the changing tectonic configuration of the Earth's continents, which altered ocean circulation patterns and affected the distribution of heat around the planet. Additionally, the growth of the Antarctic ice sheet and changes in oceanic currents may have also contributed to global cooling. The combined effects of these factors have led to a long-term trend of decreasing global temperatures since the end of the Paleocene epoch.
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Electricity from hydropower composes approximately ______% of the total electricity produced in the United States.
Answers
Electricity from hydropower composes approximately 6.5 % of the total electricity produced in the United States.
A dam or other construction that alters the natural flow of a river or other body of water is used to generate hydropower, often known as hydroelectric power.
One of the world's first forms of energy, hydropower produces power when moving water spins a turbine or wheel. As far back as ancient Greece, farmers utilized it for mechanical activities like grinding grain. Additionally a renewable energy source, hydropower doesn't emit any hazardous byproducts or pollute the environment. Discover more about the development of hydropower.
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public awareness helps in conversation and protection of environment
give reason
Answers
Answer:
Population explosion, industrialization and urbanization are some of the primary reasons for environmental degradation. Awareness in all sections of the society can be spread through various general public awareness programmes. Only with collective thinking we will be able to restore balance in our environment.
How are the percentages of deaths in middle-income and high-income countries similar? A. The largest percentages of deaths come from lung cancer, stroke, and heart disease. B. The largest percentages of deaths come from HIV/ AIDS-related illnesses. C. The largest percentages of deaths result from premature births. D. The largest percentages of deaths result from tuberculosis, lower respiratory infection, and malaria.
Answers
Answer:
A
Explanation:
most people in the world die of lung cancer, heart desease, and strokes.
The largest percentages of deaths come from lung cancer, stroke, and heart disease which is similar in middle-income and high-income countries.
ExplanationLung cancer:Non-small cell lung cancer and small cell lung cancer are the two main sub types of lung cancer. Lung cancer can be brought on by smoking, breathing in other people's smoke, being exposed to specific pollutants, and family history.The condition can cause chest pain, wheezing, a bloody cough, and weight loss. Frequently, these symptoms don't show up until the cancer has progressed.Surgery, chemotherapy, radiation therapy, targeted medication therapy, and immunotherapy are some examples of possible treatments.Strokes:A stroke is an urgent medical matter.Stroke symptoms include paralysis or numbness of the face, arm, or leg, as well as difficulties with walking, speaking, and understanding.Brain damage can be reduced with early therapy using drugs like TPA (clot buster). Other therapies include reducing side effects and averting further strokes.Heart disease:Heart disorders of various kinds are referred to as "heart disease." The most prevalent kind of heart disease in the US is coronary artery disease (CAD), which can result in a heart attack.To know more about "what happens to the prevalence of tobacco smoking when country's income level rises from middle-income to high-income."
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Fill the Blank !? oligotrophic lakes are mostly freshwater bodies consisting of a __________ zone.
Answers
Oligotrophic lakes are those that have low net primary production (between 50 and 100 milligrams of carbon per square meter per day), insufficient nutrient availability, and low secondary production.
Oligotrophic: A lake or other body of water that is oligotrophic has a low level of productivity as a result of its low nutrient content. Due to the limited growth of algae in these lakes, the water is typically quite clear. Such lakes have exceptionally good drinking water.
Such lakes are home to aquatic life that needs cold, well-oxygenated waters, like lake trout. Oligotrophic lakes are typically found in colder parts of the world where nutrient mixing is uncommon and slowly occurring due to the low temperatures.
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