THIS IS known as the PERICARDIUm
Answer:
The most common elements, like carbon and nitrogen, are created in the cores of most stars, fused from lighter elements like hydrogen and helium. The heaviest elements, like iron, however, are only formed in the massive stars which end their lives in supernova explosions.
Explanation:
C. A buildup of lactic acid in the tissues.
Answer:
ability to obtain nutrients
ability to grow
ability to respond to the environment
ability to reproduceExplanation: