The compressor in an AC system is least likely needed to

A. keep refrigerant circulating.

B. make gas hotter than ambient air.

C. increase the gas pressure.

D. lower the gas pressure.

Explain how a mutation is random process, but natural selection is not random?

18. Some groups of organisms work together to stay safe or to take down prey. What do we call this?

Many insects do not see into the red color-range and as a result, many insect-pollinated flowers are colors other than red (e. g., purple and yellow). this flower coloration would be considered

assess the similarities and differences between the somatic nervous system and the autonomic nervous system

Several studies linking cigarette smoke to health problems have resulted in the banning of smoking in many public places this is an example of ...

Which of these shows the correct pathway through the heart's four chambers after it enters from the vena cava? a. left ventricle - -> right atrium - -> left ventricle - -> left atrium b.

Describe how a planet, solar system, galaxy, and the universe are related in terms of size?

What structural parts do chimpanzees and humans have in common?

What is the function of the xylem? phloem? vascular cmabium? epidermis?

In general, why might ecologists be concerned when new invasive species arrive in an ecosystem?