Random changes in the dna sequence in a chromosome are called
a. adaptations.
b. deviations.
c. mutations.
d. variations.

How does photosynthesis show the conservation of mass and energy?

As a result of climate change earths temperature is rising and sea ice is melting what is a likely effect? answer : populations of walruses and polar bears will decline

The hypothesis that evolution occurs at an irregular rate through geologic time is known as: directional evolution directional equilibrium punctuated equilibrium punctuated evolution