Science Homework Help

This short essay question is designed to test your conceptual understanding of the big picture topics/take-home messages from chapters 28-30. There are 5 questions worth 10 point each. Questions will be based on the rubric provided below.

Hope you’re doing okay. It’s similar to what you did on the 1 and 2.

• You may use relevant resources to support your answer: Trunity ICB, lectures, notes, etc.

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the Questions

1.Why do some species demonstrate seasonal dimorphism? What environmental triggers stimulate these physical changes? What physiological processes might play a role in these physical changes?

2.When faced with limited resources, how do individual organisms respond in terms of allocation of those resources? Provide an example and include how allocation of limited resources affects evolutionary fitness (survival and reproduction). 3.Peppered moths responded to environmental change (namely pollution) by shifting their morphology to a darker color. Why was this change in color morph important to the survival of these populations? Explain how this change is expressed at the population level, rather than the individual level. (Hint: think in terms of adaptation and evolution).

4.How did the role of humans as predators likely impact populations of prey species? Provide relevant examples.

5.What is a dead zone in the marine environment? How does a dead zone form? What are the ecological consequences of a dead zone?