Not too long but just enough so that your muscles can relax. I would say no less than 15 seconds but no more than 45 seconds
True it circulates blood and nutrients in your body
Produce and secrete hormones.
Drugs, chemicals, and radiation that can cause birth defects are known as D. teratogens. Teratogens are<span> environmental agents that produce abnormalities during embryonic or fetal development.
Carcinogens can cause cancer. Progestins are used as hormonal contraception. Toxoplasmosis is a parasitic disease.</span>
