11. A farmer is using an insecticide to treat his crops. While most insects do not survive their first exposure to the insecticide some have a gene that enables them to survive. When these survivors reproduce they will likely pass along this resistance to their offspring. This results in an increase in numbers of the insects over time. Which of the following processes applies to this survival?
a. cloning
b. mutation
c. natural selection
d. genetic engineering
12. What is the ecological relationship between insects and crops?
a. mutualism b. competition c. predation
13. Sea anemones growing on the backs of crabs without damaging the crabs are an example of
a. Parasitism
b. Commensalism
c. Mutualism