Which of these characteristics differentiates electrons from protons and neutrons?
a. they do not move.
b. electrons are larger.
c. electrons are not in a fixed position.
d. they are located in the nucleus.

Environmental differences within ecosystems are generally caused by

This is the interaction of two organisms where one is and the other is neither nor harmed.

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.