What type of stimulus is an allergen such as pollen?

response to a stimulus

external stimulus

internal stimulus

inborn stimulus

When you are listening to someone and talking to him or her, which part (s) of the brain control your actions? the medulla the spinal cord the cerebrum the cerebellum

Where in a cell are the nucleic acids stored? A) Cell Membrane B) vacuole C) Ribosome D) Nucleus

Many scientists agree that the universe is about years old.

What is the probability that a cross between parents who are both homozygous recessive trait will have offspring that are homozygous recessive for that trait?

In dehydration synthesis A. the molecule is decomposed into carbon dioxide and water. B. larger molecules are decomposed into smaller ones. C. a person develops constipation. D. monosaccharides are joined. E.

Demographic transition is the transition from high birth and death rates to low birth and death rates as a country develops from a pre-industrial to an industrialized economic system. A demographic transition involves four stages.

Why does the oxygen atom in a water molecule have a negtive change

Melting wax evaporating gasoline freezing water These changes are all examples of A) nuclear changes. B) physical changes. C) chemical changes. D) energy consumption.

A woman is a natural blonde and her husband has black hair. All their children have black hair. Why do you think that the blonde hair did not appear in any of the children?

Explain why capillaries form dense networks in tissues with a high metabolic rate