2) Scientists can learn all of the following by studying fossils EXCEPT:

A. How life forms have changed over time

B. How the environment has changed over time

C. How the Earth's surface has changed over
time

D. How the surrounding rock layers have
changed over time

Isotopes of the same element have differ in their

What are 3 reasons that natural selection occurs

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?