Which biome is characterized by considerable variability in rainfall and temperature and the presence of antelope and bison

(a) tropical rain forest
(b) temperate deciduous
(c) taiga
(d) tundra
(e) grassland
(f) desert

What is thought to have caused the mass extinction at the end of the cretaceous period?

Describe the function of the endomembrane system? what organelles are involved?

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.