It depends but it’s really important that you get 7-8 hours of sleep depending on your age
<span>The statement is true, access to water and sanitation are important factors in a population's general health and well being. Water is very essential to life and indispensable in human's daily activities. Its very important that the source of water in a community is clean and free from all microbes. This is because, the contermination of a water source which serves a community may result in disease outbreak in that community which may lead to multiple death before the disease is arrested. The same applies to sanitation.</span>
Answer:
A. Vena cava
Explanation:
The aorta can't be the answer because it is the largest artery in the human body and it carries oxygenated blood. The pulmonary artery carries deoxygenated blood into the lungs for oxygenation. The pulmonary veins transfer oxygenated blood from the lungs to the heart. And lastly, the vena cava is the right answer and it returns deoxygenated blood back into the heart.
Answer: c
Explanation: He will build up his cardiovascular endurance
