A) they provided food for the expedition.
B) their behavior interested him.
C) they differed from land iguanas.
D) a and b
E) b and c

A) increases its population size.
B) increases its fitness.
C) affects other organisms.
D) does not include behavior.
E) does not include morphology.

A) the theory of uniformitarianism
B) the geology of volcanoes
C) geographic variation in species
D) all of the above
E) none of the above