Answer:I
Daniel Boone (1734–1820) and Davy Crockett (1786–1836) became two real-life icons of pioneer history.
Explanation:
The answer is (2) maintaining a stable internal environment.
Homeostasis is the process by which an organism tries to stabilise the internal body metabolism in response to external disturbances or changes. Example, when a person goes out into the snow, his body process will get overwhelmed by the sudden drop in the temperature. The body will try to stabilise its internal temperature by producing more heat in response to the cold exterior.
Water is produced when electron transport chain
