Birds evolve different beaks in response to
a. weather
b. predators
c. food source
d. family size

If cells in the process of dividing are subjected to colchicines, a drug that interferes with the functioning of the spindle fibers, at which stage will mitosis be arrested?

“in 1492 columbus sailed the ocean blue” is an example of: a)explicit memory b) procedural memory c) semantic memory d)episodic memory

Which of the following human activities resulted in the growth of the north american deer population?