I can't answer 1 but 2=First, make sure you weather proof the house, than go from there and try anything you think is necessary in this situation.
Answer:
The circulatory system to provide this oxygen and to remove the waste products of metabolism.The exchange of gases between the blood and tissue cells is internal respiration.
Explanation:
the circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles
hope this helps
Overpopulation can lead to overuse of resources, extreme pollution, war, plague, starvation, and many more serious world problems
What do you need help with?
