b. secondary
c. tertiary
5. If a farmer sprays a pesticide onto a field and kills half of the insect pests, he has caused a reduction in ________.
a. field capacity
b. carrying capacity
c. population size
d. More than one of the above
6. What type of survivorship curve would you expect for a plant species in which only a few seeds are produced and most of these survive to produce adult plants?
a. type I
b. type II
c. type III
7. An ecological niche is an organism ' s _______ in an ecosystem.
a. location
b. habitat