The earth’s history has had a significant effect on the characteristics of its organisms and biomes. how was the carboniferous period different from the devonian period? a. forests and land plants evolved during the carboniferous period. b. there were vertebrates in the carboniferous period, but not in the devonian period. c. there were an increased number of land-based organisms in the carboniferous period. d. there were vertebrates with four legs in the devonian period, but not in the carboniferous.

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.