When a human steps out into the cold air, the body begins to shiver in order to keep its temperature at 9.6 degrees Fahrenheit

eukarya because is is like alche and b is bacteria and d is animals

explanation:

the answer is "a.) well–developed vascular system."

explanation:

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: