The features that distinguish a pond from a lake are .
A)
smaller size and no temperature gradient
B)
smaller size and a temperature gradient
C)
larger size and no temperature gradient
D)
larger size and a temperature gradient

What heat is removed how does a gas become a liquid

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

How do living things obtain phosphorus