After holding our breath briefly, what eventually forces us to take a breath? decreasing oxygen levels. increasing oxygen levels. decreasing carbon dioxide levels. increasing carbon dioxide levels. increasing blood ph.

Which of the following explains marijuana's apparent effect on reaction time a. Marijuana is a hallucinogenic drug, therefore the time it takes to react is unaffected. b. Marijuana slows physical reaction time

Which of the following is true? A. Most of the species that have ever existed still exist today. B. About half of the species that have ever existed still exist today. C. All the species that have ever existed still exist today. D.

In a bacterial operon:a) all of the operon genes are transcribed into a single RNA molecule b) the inducer must be a sugar c) the inducer must be a protein d) regulation occurs at the level of translation e) all of the genes are constitutive genes.

What are two type of bess that there honey taste good

How do lipids differ from other biological molecules?

Describe the water that is most likely to float on the surface of the ocean.

Bryophytes are known as non-vascular plants. what makes them non-vascular?

If a person eats hurriedly and barely choose his food before swallowing it what effect will that likely have on his stomach?

What makes a living thing living?

A carcinogen is a cancer-causing substance.