<span>Carbon dioxide is essential for photosynthesis.</span>
Answer:
A) rigor mortis
Explanation:
Rigor mortis is the condition of the partial contraction of muscles when the muscles cannot contract or stretch. It occurs after death as the ATP supply to muscle cells stops. The leaky cellular membranes results in leakage of calcium ions from the sarcoplasmic reticulum into the sarcoplasm. The presence of calcium in sarcoplasm triggers the binding of myosin heads to actin. The myosin heads remain attached to actin and muscles are prevented to be relaxed.
Answer:
It could require the removal of massive amounts of top soil, leading to erosion, loss of habitat and pollution.
Explanation:
Coal mining causes acid mine drainage, which causes heavy metals to dissolve and seep into ground and surface water.
Franklin D Roosevelt's brain trust consisted of a group of Columbia law professors. ( moley, Tugwell and, Berle)
