Answer:
C. The pH is too acidic
Explanation:
Many acids and bases in living things are secreted to provide the proper pH for enzymes to work properly. Enzymes are biological catalysts, such as pepsin, which is needed to digest protein in the stomach and requires an acidic environment.
Answer: Option A) high in oxygen
Explanation:
Arteries are blood vessels that carry blood away from the heart. All arteries carry oxygenated (oxygen-rich) blood except pulmonary artery that carry deoxygenated blood.
In angiosperms pollen grains are produced in anthers
Answer:
fuel in a car's gas tank- Chemical Potential Energy
flash of lightning- Radiant Energy
Storm clouds- Electric Energy
vocalist singing- Vibrational Energy
recording sound with a microphone- Electric Potential Energy
raindrops falling- Motion Energy
Well it dissolves into the other particals