What is the responding variable in this experiment?
O A. The circumference of the balloon
O B...
Biology, 27.01.2021 01:20 Falconpride4079
What is the responding variable in this experiment?
O A. The circumference of the balloon
O B. The amount of yeast placed in the balloon
O C. The amount of water placed in the balloon
O D. The temperature of the water in the balloon
Answers: 3
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How many variables are altered in a good experiment? a.1 b.0 c.2 d.3
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Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?
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Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.
Answers: 1
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