When you take a deep breath before diving underwater, air is forced into your lungs by the contraction of your ... - alveoli - lungs - diaphragm - heart

Organic molecules that animals require in small amounts for normal cell function, growth and development are: Select one: a. Minerals b. Probiotics c. Vitamins d. Antibiotics

What is an example of a biotic part of an environment? a. soil b. grass c. rock d. air

Insulin is a hormone that keeps blood glucose levels from getting too low or too high. After digestion, insulin is released from the pancreas into your bloodstream.

When the moon is located between the sun and you It is called a half, full, new (choose one)

How to feed living organismas

After a hypothesis has been repeatedly tested and becomes widely accepted, it is considered a

The root of the tooth is held by the periodontal ligament a. True b. Falsee

At the center of the Andromeda galaxy is a source of x rays that scientist believe is a black hole with how many more times than the sun

True or false? The more similar two organisms are, the more distant their common ancestor is.

The blood-brain barrier a. is fully developed in humans when they are born. b. prevents many drugs from entering the brain. c. is designed to allow all drug compounds into the brain. d. cannot be penetrated, even with trauma to the brain.