Polymerase chain reaction was developed so that scientists could
a. compare the dna fingerprints of different people.
b. create corn plants that product the bt toxin.
c. replicate a gene without using bacteria.
d. choose organisms with desired characteristics for breeding.

How does natural selection change thephenotypes within a population over time?

What type of pollution does household garbage cause

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases