In science, a hypothesis must be a. correct. b. manipulated. c. controlled. d. testable.
Answers
Answer:
d. testable
Explanation: A hypothessi is like a guess. It needs to be tested to be proven.
Related Questions
How can the actions of people affect runoff and absorption in a positive way? How do they affect them in a negative way?
Answers
Explanation:
Positively:
Runoff pollution can be limited by people in many ways.
If farmers and gardeners reduce the amount of fertilizes they use,
If urban areas reduce the impervious surface as soil is a natural sponge which can absorb many harmful chemicals.
Negatively:
The population increases day by day and more urbanization occurs therefore, more of the natural land is replaced by impervious surface such as roads, buildings, park, shopping malls, parking lots etc. As it covers the soil so the absorption of chemicals and filtration reduces due to which streams and ditches form.
Biology, Ecology, Earth Science, Geology, Geography, Physical Geography
PHOTOGRAPH
Runoff Ice
A trickle of water streams from a glacier in Svalbard, Norway. Runoff from glaciers is increasing as climate change heats the planet. The increasing amount of fresh water in the ocean is causing drastic changes in the saltwater habitats.
PHOTOGRAPH BY NENET SCHMID, MYSHOT
Runoff Ice
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Morgan Stanley
ENCYCLOPEDIC ENTRYVOCABULARY
Runoff occurs when there is more water than land can absorb. The excess liquid flows across the surface of the land and into nearby creeks, streams, or ponds. Runoff can come from both natural processes and human activity.
The most familiar type of natural runoff is snowmelt. Mountains that cannot absorb water from heavy snowfalls produce runoff that turns into streams, rivers, and lakes. Glaciers, snow, and rain all contribute to this natural runoff.
Runoff also occurs naturally as soil is eroded and carried to various bodies of water. Even toxic chemicals enter waterways through natural processes, such as volcanic eruptions. Toxic gases released by volcanoes eventually return to the water or soil as precipitation.
Runoff from human activity comes from two places: point sources and nonpoint sources. Point source pollution is any source that empties directly into a waterway. This might include a pipe from specific sewage treatment plant, factory, or even a home. Regulations determine what type of runoff, and how much, industries are allowed to release. These regulations vary by region, state, and nation.
Nonpoint source pollution is any source where runoff does not go directly into a waterway. Nonpoint sources of runoff can be large urban, suburban, or rural areas. In these areas, rainwater and irrigation wash chemicals into local streams. Runoff from nonpoint sources includes lawn fertilizer, car exhaust, and even spilled gasoline from a car. Farms are a huge nonpoint source of runoff, as rainwater and irrigation drain fertilizers and pesticides into bodies of water.
Impervious surfaces, or surfaces that can't absorb water, increase runoff. Roads, sidewalks, and parking lots are impervious surfaces. Materials as diverse as car-washing soaps, litter, and spilled gas from a gas station all become runoff.
Tissues are to cells as organ systems are to _____.
A: populations
B: tissues
C:organisms
D:organs
Answers
Answer:
organs
Explanation:
Organs are to organ systems
What are the similarities and diffeWhat does a homozygous dominant and homozygous recessive genotype look like?
What does a heterozygous genotype look like?
rences between mitosis and meiosis in human cells?
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Similarities:
Both processes involve the duplication of genetic material, including the chromosomes.
Both processes occur in eukaryotic cells.
Both processes are preceded by the replication of DNA.
Differences:
Mitosis is a process of asexual reproduction, while meiosis is a process of sexual reproduction.
In mitosis, one cell divides into two identical daughter cells, while in meiosis, one cell divides into four genetically diverse daughter cells.
Mitosis occurs in all somatic cells, while meiosis occurs only in germ cells.
2. A homozygous dominant genotype is when an individual has two copies of the same dominant allele for a specific gene. In genetic notation, it is represented by two capital letters, such as "AA". This individual will express the dominant trait because the dominant allele masks the effect of the recessive allele.
A homozygous recessive genotype is when an individual has two copies of the same recessive allele for a specific gene. In genetic notation, it is represented by two lowercase letters, such as "aa". This individual will express the recessive trait because there is no dominant allele to mask its effect.
3. A heterozygous genotype is when an individual has two different alleles for a specific gene, one dominant and one recessive. In genetic notation, it is represented by one capital letter and one lowercase letter, with the capital letter representing the dominant allele and the lowercase letter representing the recessive allele. For example, "Aa" is a heterozygous genotype, where "A" is the dominant allele and "a" is the recessive allele.
a homozygous recessive would look like this: aa
and a heterozygous genotype would look like this: Aa
i cant answer the second question, but i hope that could help ;)
Signals from _______ and the body's _______ are received by the brain and the spinal cord
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50 POINTS!
Energy is transferred into the ecosystem when
1.when bacteria absorbs nitrogen from other organisms
2. dead organisms decay and form organic matter
3. rodent prey on invertebrates
4.plants grow from the soil
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Answer:
2
Explanation:
Energy is transferred between organisms in food webs from producers to consumers.
The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
Answer: between organisms in food webs from producers to consumers.
Explanation:
pls help me will mark brainlyest :) :
Internal and External Structures
You are now going to construct an argument that plants have internal and external structures that support growth and reproduction.
Choose the internal and external structures you want to gather evidence and create a statement about.
subject: sciences
Answers
Explanation:
Some structures are internal, like the lungs, brain, or heart. Other structures are external, like skin, eyes, and claws. Some structures are unique, like the long neck of a giraffe. Other structures are more common, like a heartStructure and Function: Plants and animals have both internal and external structures that serve various functions in growth, survival, behavior, and reproduction.
I hope this helps! Good Luck!
What effect have human activities had on the ozone layer?
Answers
Answer:
Human activities cause the emission of halogen source gases that contain chlorine and bromine atoms. These emissions into the atmosphere ultimately lead to stratospheric ozone depletion.
Explanation:
Hope this helped!
PLEASE HELP NOT SURE IF I GOT THESE RIGHT.... iT'S ON A TIMMER..
IT'S SCIENCE AND ITS ABOUT PHYSICAL AND CHRMICAL CHANGE
Answers
Answer:
Looks all correct to me!
Eye color is determined by two alleles B and b. B is for dominant for brown eyes and b is recessive for blue eyes. What is the possible genotype of a person with brown eyes? (more than one possible answer)
a. Bb
b. BB
c. bb
Pls be serious when answering this question.
Answers
Answer:
A and B
Explanation:
Because B Brown is dominant It will show up in a Bb instead of b Blue. Brown is dominant over blue.
If ther genotype is BB then Brown is the only color that will show.
So A and B will be the answer.
Various gene variations affect a person's eye color. Most of the genes related to eye color make, transport, or store melanin, a pigment. Eye color is directly influenced by the amount of melanin present in the iris's outermost layers. Thus, option A, B is correct.
What effect of genotype on eyes color?Even while eye color is frequently thought of as a simple Mendelian feature, additional research.
Eye color does not follow the conventional hierarchical patterns of heredity, according to observation. Variations in eye color exhibit both epistasis and partial dominance.
Due to B Brown's dominance, it will manifest as a Bb rather than b Blue. Brown is dominant over blue.
Therefore, If their genotype is BB, then Brown is the only color that will show.
Learn more about genotype here:
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How did the Industrial Revolution contribute to global climate change?
A. It led to an increased use of alternative fuels other than fossil fuels.
B. It led to an increased use of coal, oil, and other fossil fuels.
C. It led to the release of chemicals that destroyed the ozone layer.
D. It led to the development of nonrenewable sources of energy. (I think it's B. Please correct me if I'm wrong.)
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Answer: You're right its b.
Explanation:
Human activity has rapidly increased the emission of greenhouse gases to the atmosphere. Since the start of the Industrial Revolution, in about 1750, human activities such as burning fossil fuels, including coal and oil, have increased greenhouse gas concentrations in our atmosphere.
What is the outcome of a human embryo receiving two X chromosomes?
Answers
Answer:
The outcome would be female.
Explanation:
Two X chromosomes results in a female, but an X and a Y chromosome results in a male. Hope this helps.
_____, _____, and _____ are examples of nonrenewable resources.
carbon dioxide, natural gas, and the Sun
coal, natural gas, and the Sun
coal, natural gas, and oil
carbon dioxide, oil, and the Sun
Answers
Answer:
coal, natural gas, and oil
Explanation:
CO2 isnt a source of energy.
The Sun wont run out any time soon.
Label all of the components of this DNA structure with the following terms: Phosphate sugar backbone, nitrogenous base, hydrogen bonds.
Answers
Answer:
Phosphate sugar backbone:
The sugar-phosphate backbone forms the structural framework of nucleic acids, including DNA and RNA. This backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.
Nitrogenous base:
Nitrogen bases are the molecules that make up the steps of the ladders. There are four different nitrogen bases, namely; Guanine, Thymine,Adenine and Cytosine.
Pyrimidines are compounds that make a single 6-sided ring. Examples of pyrimidines are Cytosine and Thymine.
Purines on the other hand make 5-sided and 6-sided rings. Examples of purines are Guanine and Adenine.
The nitrogen bases are helped together through hydrogen bonds.
Hydrogen Bonds:
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
HOPE IT HELPS!
Pls mark the Brainliest!!
Hope this helps brainliest is always appreciated!
Which of the following is not used as evidence to support the theory of evolution? *
A. The similarities in embryos of reptiles, birds and mammals.
B. The similarity in bone structure in the appendages of whales, bats and humans
C. Fossils that show ferns and dinosaurs lived at the same time
D. Similarities in DNA between chimpanzees and gorillas
Answers
Answer:
I think A but Im not sure.
Explanation:
An embryo is the early stage of development of a multicellular organism. So idk why I put this in. XD
if a parent with A blood type has an offspring with someone who has A blood, what are the chances of the offspring having A blood
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What is an independent variable?
Also im okay now! Yesterday was i little wobbly, but im here and im fine!
Answers
biology
1. What is an ecosystem?
2. What are some examples of nonliving things in an ecosystem?
3. What are some factors that could affect the number of organisms in an ecosystem?
4. Why might organisms interact in an ecosystem?
5. Would you expect to find the same kinds of interactions between organisms in very different ecosystems? Why or why not?
6. Why is it important to understand feeding relationships in an ecosystem?
Answers
Examples of nonliving things in an ecosystem include sunlight, water, air, rocks, soil, and minerals.
Factors that could affect the number of organisms in an ecosystem include the availability of food and water, temperature, weather conditions, availability of shelter or habitats, the presence of predators and disease, and human activities such as deforestation or pollution.
Organisms interact in an ecosystem to obtain resources such as food, water, shelter, and mates, and to avoid being eaten by predators or infected by diseases. Some organisms also form mutualistic relationships, where both parties benefit from the interaction.
Different ecosystems can have different organisms and interactions based on the unique features of each ecosystem, such as climate, geography, and available resources.
Understanding feeding relationships in an ecosystem is important because it helps us understand the flow of energy and nutrients through the ecosystem. This knowledge can inform conservation efforts and help us manage and protect ecosystems for the benefit of all living organisms, including humans.
Answer:
1. An ecosystem is a system of interactions between living and nonliving things in a particular environment.
2. Some examples of nonliving things in an ecosystem include sunlight, soil, rocks, air, water, and temperature.
3. Factors that could affect the number of organisms in an ecosystem include availability of resources, predation, competition, and environmental changes.
4. Organisms interact in an ecosystem in order to find food, to find mates, to escape predators, and to compete for resources.
5. No, you would not expect to find the same kinds of interactions between organisms in very different ecosystems due to differences in biotic and abiotic factors.
6. It is important to understand feeding relationships in an ecosystem because understanding these relationships gives us insight into the stability, dynamics, and functioning of the overall ecosystem. It can also provide an understanding of how the ecosystem may respond to environmental changes.
What happens to prey populations when predators eat some individuals
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Answer: They grow more slowly, reproduce less, and populations decline. ... As predator populations increase, they put greater strain on the prey populations and act as a top-down control, pushing them toward a state of decline. Thus both availability of resources and predation pressure affect the size of prey populations.
Why it was important that Gregor Mendel used thousands of pea plants in his experiments? Would Mendel have found the same results if he had used only twenty plants? Explain.
Answers
Answer:
Explanation:
Gregor Mendel used thousands of pea plants in his experiments to ensure that his results were accurate and reliable. By using a large sample size, he was able to reduce the effects of chance and random variation in his experiments. This is important because biological systems are complex and variable, and small sample sizes can lead to inaccurate or misleading results.
Mendel's experiments involved crossing pea plants with different traits (e.g., tall vs. short, yellow vs. green), and he counted the number of offspring with each trait. He found that the offspring followed predictable patterns of inheritance, which he summarized in his laws of inheritance.
If Mendel had used only twenty plants in his experiments, he may not have obtained the same results. With a small sample size, chance events can have a greater impact on the results. For example, if he crossed two pea plants with different traits and obtained only a few offspring, it's possible that chance events (such as mutations or environmental factors) could have influenced the results. This could lead to false conclusions about the inheritance of the traits.
Therefore, using a large sample size was critical to Mendel's success in developing his laws of inheritance. It allowed him to detect patterns that were consistent across many different crosses, and to demonstrate that these patterns were not the result of chance variation.
A student is studying a gray pine (conifer/gymnosperms), an apple tree and an avocado tree. After conducting research about them she discovers some similarities and differences between them. What are some of the differences and similarities she probably discovered? (Hints: think about how they reproduce)
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Can someone Help me with Science.
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d. Marine species ingest or are entangled by plastic debris, which causes severe injuries and death. Plastic pollution threatens food safety and quality, human health, coastal tourism, and contributes to climate change.
7.a In the United States, food waste is estimated at between 30–40 percent of the food supply.
b. discarded catch of marine species and unobserved mortality due to a direct encounter with fishing vessels and gear.” These unintentionally caught animals often suffer injuries or die
c. Create a meal plan.
Save and eat leftovers safely.
Store food appropriately.
Buy "ugly" foods.
Compost.
Use leftovers creatively.
that’s all i got, FYI: sorry but i didn’t use that “good waste is thrashing the planet” thing in case if it was necessary
Answer:
Explanation:b. Answer. By cutting forest ( to fullfill our food requirements and for cultivation purposes)hunting many precious animals threatened wildlife.
Look at the diagram of the rock cycle below.
Which part of the cycle is missing?
A.
sedimentation
B.
melting
C.
crystallization
D.
mineral integration
Answers
it’s melting
From the diagram of the rock cycle the missing part is ( B ) ; Melting
Magma is a hot liquid/semi-liquid rock that is usually formed under the earth due to high pressure and temperature present in the inner core of the earth. magma is obtained by the melting down of existing rocks ( Igneous, sedimentary and metamorphic rocks ) under high pressure and temperature in the earths core.
Magma is released to the earth surfaces during volcanoes therefore the missing term in the rock cycle is melting
Hence we can conclude that from the diagram of the rock cycle the missing part is Melting.
Learn more : https://brainly.com/question/23661578
Analyze this weather map and provide five specific dxamples of weather conditions found in this map. Use the textbox below to record your observations and number your examples. Give detail.
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Answer: 1. cold fron heading south east.
2. High pressure in Arkansa.
3. warm front heading northwest from Florida.
4. Low pressure in north florida
5. Extreme heat around Texas/Oklahoma state lines
Explanation:
Answer:
Explanation:
cold fron heading south east.
2 High pressure in Arkansa.
3 warm front heading northwest from Florida.
4Low pressure in north florida
5 Extreme heat around Texas/Oklahoma state line
What are the base-pairing rules? This is for DNA by the way.
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Answer:
A pairs with T or U, G pairs with C
Explanation:
"Constraints imposed by the molecular structure of DNA and RNA on the formation of hydrogen bonds among the four purine and pyrimidine bases such that adenine pairs with thymine or uracil, and guanine pairs with cytosine."
What kind of energy conversion is shown in the diagram?
A. Thermal energy is used to produce mechanical energy in plants.
B. Radiant energy is used to produce mechanical energy in plants.
C. Radiant energy is used to produce chemical energy in plants.
D. Thermal energy is used to produce chemical energy in plants.
Answers
Answer:
c
Explanation:
where did the name '' hamster'' probably come from?
A. The animal was discovered by a person named Hamm.
B. People thought the animals looked like little hams.
C. It comes from a word meaning ''tiny''.
D. It comes from a word meaning ''to hoard''.
Answers
Answer:European Hamster
Smallest breed
Roborovski hamster
Stout-bodied rodents,
with tails shorter than body length, and have small, furry ears, short, stocky legs, and wide feet.
en.wikipedia.org
Popular breed
Golden hamster
They carry food in their spacious cheek pouches to their underground storage chambers. When full, the cheeks can make their heads double, or even triple in size.
en.wikipedia.org
Explanation:
Which environment is characterized by very low temperatures and low humidity year round?
Desert
Grassland
Swamp
Tundra
Answers
Reasoning: When you think of a tundra, it’s more of like Antarctica. Possibility to be confused with deserts, which have little to no precipitation/low humidity.
What is the function of the contractile vacuole? What would happen if the cell did not have this organelle?
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Wakefield’s latitude is 42 degrees North. The sun on the summer solstice is directly overhead at 23.5 degrees North latitude (the Tropic of Cancer). What will the sun’s altitude above the horizon be to an observer in Wakefield on that date?
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Answer: Wakefield's latitude is 42 degrees North. The sun on the summer solstice is directly overhead at 23.5 degrees North latitude (the Tropic of Cancer).
Explanation:
Question: What could have caused the size of the moon jelly population to increase?
Claim 1: A change to the zooplankton population caused births to increase in the moon jelly population.
Claim 2: A change to the sea turtle population caused deaths to decrease in the moon jelly population.
Answers
Answer: Claim 1, A change to the zooplankton population caused births to increase in the moon jelly population, or in other words caused the death rate to decrease.