Hanson is designing an experiment to test the porosity of a soil sample. His experiment involves the following:
Place the soil sample in a water-tight container.
Slowly pour water into the container.
Measure the volume of water that the soil absorbs.
Which of the following would improve Hanson's experiment?
A.
if he measured the volume of the soil beforehand
B.
if he measured the mass of the soil beforehand
C.
if he measured the porosity of the water beforehand
D.
if he measured the mass of the water beforehand

Answer:

In most cases, no.

Explanation:

Some basic needs of an organism are an appropriate environment ( E.g. Having water for fishes, be it salty or fresh), have a reasonable temperature and pH value of its surroundings, and having enough food to sustain itself. You can even look at things like air composition.

There's no way an organism that normally lives in slightly alkaline water can survive in water with a pH of 3. Similarly, organisms can't survive in unsuitable temperatures, like how a polar bear can't survive in the desert.

In cases like food, they would die from starvation without appropriate amounts of food.

In essence, an organism is not likely to be able to grow in environments that do not meet their needs.

Some organisms adapt and change over time depending on the organisms, but most of them may die before adulthood.

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.

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Answer: C., It would make sense because you are carrying water water from the equator to the polar zones.

Explanation:

Answer:

B. Cold/ cold

Explanation: As water flows from an area of high temperature to low, it's temprature also gradually decreases.

With the decrease in water temperature the air also cools down.

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Answer:

it is number 2 becuase it both has to be the same

Explanation:

Answer:

Diffusion:

Substances, such as water, ions, and molecules needed for cellular processes, can enter and leave cells by a passive process such as diffusion.Diffusion is a type of substance movement that requires no energy to be expended for the substance to move. Simple diffusion occurs when there is no obstacle to the substance so it can diffuse freely.

Osmosis:

Osmosis is the movement of a solvent across a semipermeable membrane toward a higher concentration of solute (lower concentration of solvent).There are three types of solutions that's determine osmosis-

1) hypotonic solution: in this case the solvent is less and the solution is more(dilute solution).More water is there outside the cell than inside the ell, so the water moves into the cell which causes the cell to swell up

2)hypertonic solution: in this case there is more solute than solvent(concentrated). More water is there inside the cell than outside the cell, so more water will leave the cell than it enters as a result the cell will shrink.

3) Isotonic solution: the amount of water inside the cell is equal to water outside the cell as a result the cell will neither shrink not swell.

Examples of diffusion:

Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs: oxygen moves down a concentration gradient from the air in the alveoli to the blood. carbon dioxide moves down a concentration gradient from the blood to the air in the alveoli.

Examples of osmosis:

Osmosis occurs to recover water from waste material. Kidney dialysis is an example of osmosis. In this process, the dialyzer removes waste products from a patient's blood through a dialyzing membrane(acts as a semi-permeable membrane) and passes them into the dialysis solution tank.

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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.

Answer:

bacteria are found everywhere even in hot springs. Bacteria are different from other organisms because they don't have membranes bound organelles .they replicates to produce

Explanation:

Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or slightly acidic. There are exceptions, however some bacteria thrive in extreme heat or cold, while others can survive under highly acidic or extremely salty conditions.

Many types of bacteria, if environmental conditions become unfavourable (lack of water, increase in temperature, etc), will go into a sort of dormant state, called an Endospore.

Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or Golgi apparatus.

Bacteria reproduce through a process called binary fission. During binary fission, the chromosome copies itself, forming two genetically identical copies. Then, the cell enlarges and divides into two new daughter cells. The two daughter cells are identical to the parent cell.

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Answer: 4

Explanation:

Answer:

Natural selection is to ensure that only the best individuals live. Natural selection does not allow the sick or the incapacitated to survive. But man does not have natural selection, only in some cases. There is also little natural selection on farms.

Natural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. For example, treefrogs are sometimes eaten by snakes and birds, evolving long necks has enabled giraffes to feed on leaves that others can't reach, giving them a competitive advantage.

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Answer:

false

Explanation: The Calvin Cycle, or light independent reaction, does not utilize sunlight as an input. During the light independent reaction, or the Calvin Cycle, carbon fixation first occurs. CO2 produced during the light dependent reaction reacts with RuBP, ultimately producing PGA.

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Answer:

7, 5

Explanation:

ur not giving branliest capper

he eat is he eat it for lunch

Answer:

S - Savannas are typically found in tropical or subtropical regions.

S - Savannas tend to have more trees and shrubs.

S - Savanna's climate is drier than that of a grassland.

G - Grasslands are found in temperature regions.

G - Temperature Grasslands are mainly devoid of trees, receive less rainfall than Savannas & endure broader temperature extremes.

G - Grasslands make up 25 percent of the Earth's land surface and dominate in regions with limited rainfall, which prevents forest growth. This results from nearby mountain ranges that cause rain shadows over adjacent open-range lands.

B - Both represent the world's richest and most diverse ecosystems. They both provide a home for a quarter of the world's population and a habitat for thousands of plants and animals.

B - Many species gather in vast numbers, graze on the varied grasses, and can be found nowhere else on Earth. The coexistence between wildlife and grasses is key to healthy ecosystems. Animal migrations regenerate the landscapes, by controlling pests, dispersing seeds, and trampling invasive species. Through this partnership, grasslands and savannahs generate vital benefits for both people and nature.

B - Ecosystems such as these two in specific are essential for climate mitigation – they store carbon, locking it deep in the soil and extensive root systems. They are the source of or support many of the world’s biggest rivers and wetlands, ensure food security, support livelihoods, and are embedded in the cultural identity of millions of people.

(Also, A savanna or savannah is a mixed woodland-grassland<---similarity)

Explanation: Just research. I decided to state 3 characteristics for both The Savanna and The Grasslands, and then 3 for "B" (both).

Arrow 'f' releases carbon dioxide.

Answer:

F I think I am not sure though hope I helped.

Answer: Droped

Explanation: Weathering breaks it, Erosion takes it, Depiction drops it

Answer: sediments

Explanation:

Answer:

C

Explanation:

Answer:

The genotype "Tt" in a Punnett square represents heterozygous pea plants, meaning they have one dominant allele and one recessive allele for a particular trait.

Explanation:

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.

Answer:

There would obviously be 4 genotypes, all of which are Rr.

Explanation:

Using Punnett Squares, with a dominant genotype or RR, and a recessive genotype of rr, you'll get four Rr genotypes.

Answer:

The blue arrows in circles indicate that cool air is sinking

Explanation:

Warm air is less dense than cool air. For this reason, warm air rises, creating a low pressure region, and cool air, which is more dense than warm air, sinks creating a high pressure zone. In this description, the red arrows represent the hot air rising up to the sky, and the blue arrows represent the cool air sinking down. The reason warm air is less dense is because its molecules are further apart than when it is cold, making it lighter per cubed square foot.

So, we can conclude that option a) Warm air is rising is incorrect, because the warm air rising is represented by the red arrows pointing up form the land to the sky.

Options c) Cool air is less dense and d) warm air is more dense are also incorrect, because as mentioned before, cool air is more dense than warm air.

Answer:

if i could pick a superpower it would be cool for creative mode

Explanation:

if i had creative mode i could do what ever i wanted

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Answer:

Differences between the Kutchicetus and the Saber-toothed cat:

The Kutchicetus had a large tail for propelling in the water, and thick blubber to stay warm.

The Saber-toothed cat had a short tail, lived in social groups, and weighed twice as much as the lion.

(They both had proportionally small hind legs compared to the rest of its body.)

Explanation:

I know the Kutchicetus had a large tail and the Saber-toothed cat didn't becuase of anatomy and reasoning (the Kutchicetus dwells in water).

I know the Kutchicetus had thick blubber and the Saber-toothed cat didn't because of anatomy and reasoning (the Kutchicetus dwells in water).

I know the Saber-toothed cat lived in social groups and the Kutchicetus didn't because the Saber-toothed cat is related to lions (lions have social groups).

I know the Saber-toothed cat weighed twice as much as the lion because of research.

I know they both have proportionally small hind legs because of anatomy. (Images)

Answer:

Why Amelia Earhart may not have been able to see Howland island may have been because of storms, dense fog, or clouds.

Explanation:

People miss many things when they are trying to get through storms.  Fog is really hard to see through so Amelia could have easily missed it.  Clouds could have covered her view of the island so she would have missed it.

Answer:

Earhart never arrived on Howland Island and disappeared.

Explanation:

While battling overcast skies, faulty radio transmissions, and a rapidly diminishing fuel supply in her twin-engine Lockheed Electra plane, she and Noonan lost contact with the Itasca somewhere over the Pacific.

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Asthma is a chronic respiratory disorder that affects millions of people worldwide. It is a condition that causes the airways in the lungs to become inflamed, making it difficult to breathe. This inflammation can also cause the airways to become more sensitive to certain triggers, such as allergens, pollutants, and exercise.

The symptoms of asthma can vary in severity from person to person, but they typically include wheezing, coughing, chest tightness, and shortness of breath. These symptoms can be triggered by a variety of factors, including exposure to allergens such as dust mites, pollen, and pet dander; irritants such as cigarette smoke and air pollution; respiratory infections; exercise; and emotional stress.

Asthma can be classified as either intermittent or persistent, depending on the frequency and severity of symptoms. Intermittent asthma is characterized by infrequent and mild symptoms, while persistent asthma is characterized by frequent and severe symptoms that can affect a person's daily activities and quality of life.

Asthma is typically diagnosed through a combination of medical history, physical examination, and lung function tests. Treatment for asthma usually involves a combination of medications and lifestyle changes, such as avoiding triggers and improving overall health through regular exercise and a healthy diet.

Medications used to treat asthma include inhaled bronchodilators, which relax the muscles around the airways and allow them to open up, and inhaled corticosteroids, which reduce inflammation in the airways. In more severe cases, oral medications or injections may be necessary.

In addition to medication, lifestyle changes can also play an important role in managing asthma. For example, avoiding triggers such as allergens and pollutants, maintaining a healthy weight, and staying physically active can all help to improve asthma symptoms and overall lung function.

Overall, asthma is a complex and challenging disorder that requires ongoing management and attention. However, with proper treatment and care, most people with asthma are able to lead full and active lives, free from the limitations and symptoms of this condition.