The main factors affecting birth are:
Age.
Health.
Heredity.
Ovulation cycle.
Location.
Miscarriage
The answer is A, high blood pressure
Yes people can get HIV without having full blown aids
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.
