6. Which of the following best describes the theory of punctuated equilibrium?
a. Biological change occurs quickly over a short period of time.
b. Tiny changes in a species add up to major changes over time.
C. A biological change occurs slowly and steadily over a long period of time.
d. Events throughout the history of life have caused the extinction of species.

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

the real answer is b. scintillation counter

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

no i don't feel that humans have oversubscribed some medications