What is responsible for creating sperm cells?

Which statement about consumer rights is true? only celebrities have the right to complain about products that do not work. consumers can always get their money back if they dislike a product purchased. consumers are not allowed to complain about a product after it is purchased. everyone has the right to participate in making laws that affect consumers.

Fitness evaluations are usually design for certain group of people

How does fluid in the body become lymph? how is it returned to your blood