Since it’s natural environment is very acidic, putting pepsin in a very alkaline environment would cause it to denature.
C i am guessing but i hope this helps
Answer AND Explanation:
Respiration by both plants and animals as well as by microorganisms converts some of the organic compounds into carbon dioxide. The latter is released back to the atmosphere and reused by green plants.
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs so I would say the first choice, hopefully I helped out !:)
Carbohydrates are sugar, and the closest answer on there is A. artifical sweetener.