The type of change where new compounds are formed is called a

a. chemical change.

b. phase change.

c. physical change.

d. nuclear change.

Which body system rapidly communicates information using electrical signals? A. Endocrine B. integumentary C. Nervous D. Respiratory

Which of the following is an example of how taxon classification might change?

What rule is used to join the free nucleotides to the exposed bases of the dna

Warm air rises at the equator and cold air sinks near the?

The phenomenon that results from the rapid changes in tissue and fluid pressure that occur with the passage of a projectile, resulting in serious injury to internal organs distant to the actual path of the bullet, is known as what?

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness

Which two systems in the human body are devoted exclusively to the regulation of organ function?

A 40-year-old man reports to his health care provider complaining of "heartburn" that occurs after eating and also wakens him at night.

What do Meg and Charles Wallace have in common? a. They both like to be "exclusive." B. They both are called "not quite bright." C. They both have IQs that are "more than okay." D. They both are described as "new."