What is one source for the variation that drives natural selection?
a.
mutation
c.
over production
b.
cloning
d.
population shifts

select the best answer from the choices provided

a
b
c
d

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

What is the correct equation for cellular respiration?

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa