Answer: (at least) 1 hour per day
Explanation/Calculation: Teens from ages 13-18 bodies are need lots of physical activities so that their body and brain will be ready for adulthood where your body and brain slows down. If you get lots of exercise in your teen years, it's very likely your health in adulthood will be healthy too.
Answer:
The primary function of white blood cells are that they help the body fight infection and other diseases that enter the body. Mostly if they are unknown to the cells. Example: they fight of cancerous cells, infections and diseases.
Explanation:
Answer:
option C
Explanation:
The tendency of individuals in a large group to be less likely to administer aid during an emergency is known as bystander effect.
Answer:
The answer is C
Explanation:
You need people to run tests for you