Answer:
a divers collection of people is called a assistance group
Answer:
•weak immune system is the answer
Answer:
True
Explanation:
Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
The use of a drug for non medical reasons
Drugs are usually made to help a person combat diseases, etc, but if it is used for something other then it's intended purpose, or is used to, instead of helping the body but destroying it, it becomes a "drug abuse"
hope this helps
