Which of the following statements about stars is true?

A. Stars vary greatly in temperature.

B. none of these

C. Stars rarely differ in temperature.

D. All stars are the same temperature.

What forms as a result of the wind's frictional force on water? deep sea currents that move in a path similar to the wind currents surface currents that move in a path similar to the wind currents surface currents that move in a path opposite to the

What kind of cell contains DNA and a nucleus?

The A. right atrium B. left atrium C. right ventricle D. left ventricle receives oxygen-poor blood from the body and pumps it to the A. right atrium B. left atrium C. right ventricle D. left ventricle through the tricuspid valve.

10. The bacteria that are capable of converting the atmosphere nitrogen into nitrates and nitrites thereby increasing soil fertility. a. Rhizobium b. E. coli c. Spirilla d. Lactobacillus

Nonnative species thrive in new ecosystems because they have superior gene pools. a. True b. False

The amount of light and temperature are examples of

Genetic drift refers to changes in the gene pool of a population that result from O A. injuries caused by male competition O B. changes in the number of polygenic traits O c. a type of artificial selection D. random changes in allele frequencies

The two most common nutrative (caloric) sweeteners used in the manufacturing of food and beverages are sucrose and high-fructose corn syrup (HFCS).

A plant cell shrinks from the lack of water what term describes the environment outside the cell? permeable hypertonic hypotonic osmotic

The continents began to drift apart by the end of the