Question 11
Which statement best explains why it is so hard to control mosquitoes, fire ants, and other unwanted insects?
a
Scientific evidence says that these pests must be completely eliminated.
b
They quickly become resistant to pesticides in certain environments.
c
Some of these organisms are invaders from other environments.
d
The characteristics of insects have remained unchanged for many years.
Question 12
b
They quickly become resistant to pesticides in certain environments.