What is a risk of using chemical pesticides on crops?
A	
chemical contamination of streams and rivers
B	
rotating crop production
C	
genetic mutation of existing crops
D	
attracting more insects to the harvest-able product
Which of the following is used to describe an animal's characteristics that increase the animal's chances of survival and reproductive success in a specified environment?
A	
inheritance of acquired characteristics
B	
convergent evolution
C	
phyletic gradualism
D	
adaptation