Researchers discover another cytokine (x) that is upregulated even more than z as a result of exercise. cytokine x binds to receptors in skeletal muscle to stimulate angiogenesis. after strenuous exercise, local [x] would be least similar to post-exercise [z] in:

they absorb it i think

not sure

you

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high