When a muscle cell demands energy to contract, what happens to atp? a. atp makes more atp. b. atp is hydrolyzed and turns into adp c. atp is phosphorylated. d. atp is shuttled to the mitochondria

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: