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