Answer:
y chromosome is responsible to determined the sex of the child
x chromosome don't determined the Sex of the child
Answer: a) drive-reduction
Explanation: Homeostasis is basically the body's need to maintain stability necessary for survival despite changes in the world outside. It is the body's unconscious tendency to maintain internal states (temperature, sleep, thirst, hunger) at stable levels.
Drive-reduction theory, which is a major theory of motivation, suggests that when there is an Homeostatic imbalance, needs are created, people perform actions (i.e their behaviour changes) to restore the body's ideal state, because of the need to restore balance.
Answer:
brain has to do with your bodily functions?
Our lung capacity naturally starts to decrease at the age of 30. By the time we reach 50, it could be decreased by half. I'm not sure about when we reach 90 though. Hope this helps! :)