Environmental Science Final Exam Spring 2021
1.
Which of the following would be a density-independent cause of large numbers of deaths in a
population?
a. Disease-carrying beetles
b. Food shortages
C. Hurricanes
d. Predatory birds
2. How many species of organisms exist on Farth?

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

What material did the moon come from?