Answer:
more surface area and volume
Explanation:
Answer:
Theodor Schwann and Matthias Jakob Schleiden
Explanation:
Pepsinogen, an inactive zymogen, is secreted into gastric juice from both mucous cells and chief cells. Once secreted, pepsinogen is activated by stomach acid into the active protease pepsin, which is largely responsible for the stomach's ability to initiate digestion of proteins.
A plasma membrane Hope it helped.
Answer:
A walrus stays warm in the cold ocean or penguins can stay warm in cold arctic waters.
