Veins carry deoxygenated blood while arteries carry blood rich with oxygen.

1) True

2) False

Basic info on the use of vaccinations

Which of the following statements about extinction is true? Choose one: A. Recent species are disappearing so slowly that researchers suggest our present time is another mass extinction. B.

If you could know that a fossil that is 10,000 years old started with 20 mg of carbon-14, how much would you expect that same fossil to have today?

What do you think would happen to earths tides if the moon was not there

Which of the following is a not limiting factor for rabbits? A. sunlight B. water C. grass D. foxes

The endocrine system is responsible for the sexual maturation that teenage bodies experience, true or false?

QUICK CHECK Bisphenol A (BPA) is a chemical used to make polycarbonate plastics. Polycarbonate plastics are used in certain food and drink packaging such as baby bottles, water bottles, and other drink containers.

Which food contamination is best prevented by cooking to safe temperatures?

March the following parts of a flower with their description

What factors in the environment cause weathering