Answer:D
Explanation:
Hibernation is an innate behavior. It is not learned after birth. Animals that hibernate are born with an internal sense, or instinct, that tells them.
Hope This help :P
Answer:
Both the respiratory and circulatory systems works in coordination in order to purify the blood.The heart continuously pumps blood and the lungs at alveolar sacs the CO2 and O2 get exchanged.Continuously through the diffusion.
From body parts the blood reaches at heart through Vena cava To right atrium,then from Right ventricle through pulmonary artery it reaches to lungs and get purified.Form there it again comes back to heart through pulmonary vein and again through Aorta it again reaches to the body parts.
Hope it helps....
<em>Five benefits of physical activity: </em>
1. It strengthens the body. - Physical
2. It prevents illness. - Physical and Emotional
3. It improves brain function. - Mental
4. It increases energy level. - Mental and Physical
5. It makes you feel happier. - Emotional and Social
Physical exercise is beneficial to all aspects of human existence whether physically, mentally, emotionally, socially, or spiritually. Once you are physically healthy, the rest follows. Everything is interconnected.
The lungs need to remain elastic so they can<span> effectively move oxygen into the body and carbon dioxide out of the body</span>
