A farmer found that caterpillars were eating his corn. He sprayed his field with pesticide to kill them. For the first three yea
rs this treatment worked well, leaving only a few caterpillars in the field. Based on what is known about natural selection, what can he expect in succeeding years if he continues to use the same pesticide? (2 points) The caterpillar population will develop resistance to the pesticide if any of them survived it because they were genetically different from the rest.
The caterpillar population will remain at very low levels every year the pesticide is applied since it keeps them from reproducing well.
The caterpillar population will continue to be successfully controlled by the pesticide indefinitely since it has worked for three years.
The caterpillar population will eventually be exterminated completely and it will likely become extinct. need help
Decline in the global population of amphibians is due to multiple reasons which include:
A moist ecosystem is necessary for amphibians especially for the purpose of their reproduction. The drainage of the wetlands deprives them of their habitat.
Pollutants adversely affects the survival of the gametes, tadpoles or the adult amphibians by acting as toxic agents and inhibiting their normal metabolic function.
Infectious diseases often cause their death resulting their population to decline.
Global climate warming affects their normal metabolic growth and development and hence causes their population to decline.
