Two students from the same class, studies different types of animals. Bill studied predators, while John studied grazers. Given the paragraph above, please answer correctly the following question: Which student didn't find out that a single species could become dominant over others? Hint: Predators play an important role in an ecosystem. For example, if they did not exist, then a single species could become dominant over others. Grazers on a grassland keep grass from growing out of control. Predators can be keystone species . These are species that can have a large effect on the balance of organisms in an ecosystem. For example, if all of the wolves are removed from a population, then the population of deer or rabbits may increase. If there are too many deer, then they may decrease the amount of plants or grasses in the ecosystem. Decreased levels of producers may then have a detrimental effect on the whole ecosystem. In this example, the wolves would be a keystone species.
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Answer: John

Bill and Chad both displayed allergic reactions. Bill had mild symptoms, while Chad displayed severe allergic reactions and was rushed to the hospital. Given the paragraph above, please answer correctly the following question: Which person displayed fewer symptoms such as itchy eyes? Hint: Allergy symptoms can range from mild to severe. Mild symptoms might include itchy eyes, sneezing, and a runny nose. Severe symptoms can cause difficulty breathing, which may be life threatening. Keep in mind that it is the immune system and not the allergen that causes the allergy symptoms. Allergy symptoms can be treated with medications such as antihistamines. Severe allergic reactions may require an injection of the hormone epinephrine. These treatments lessen or counter the immune system's response.
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Answer: Chad

Marcus is going for a walk outside. He is wearing a black shirt and notices it feels very hot to him. His friend Adam joins him shortly after. Adam is wearing a white shirt and expressed to Adam how nice it is outside. He doesn't feel nearly as hot as Marcus. Given the paragraph above, please answer correctly the following question: Will a light colored piece of clothing be hotter or colder than a dark piece of clothing when left out in the sun for a short time? Hint: Light may transfer its energy to matter rather than being reflected or transmitted by matter. This is called absorption . When light is absorbed, the added energy increases the temperature of matter. If you get into a car that has been sitting in the sun all day, the seats and other parts of the car's interior may be almost too hot to touch, especially if they are black or very dark in color. That's because dark colors absorb most of the sunlight that strikes them.
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Answer:
colder