Sandra has a family history of osteoporosis.

The germs that cause infections are mainly spread in what three ways? a. immunization, mucous membranes, not washing hands b. germ-laden droplets, direct contact with body fluids, insects c. hand hygiene, sickness, immunization d. not enough sleep, low oral hygiene, germs

Which is an example of a food group? a. oils b. vegetables c. water d. sweets

Why mature red blood cells has no nucleus