The eruption of a volcano would be considered a of the earth.

a physical process
a physical characteristic

What is the difference between a census and a study that is not a census? select one: a. a census by definition extends over a long period of time. b. a census involves interviews. c. a census collects data on the entire study population. d. a census involves a written survey.

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

The sun a. will become a red giant within two to three million years b. is in its main sequence, which willlast thousands of years c. is in its main sequence, which will last billions of years. d. will explode as a supernova after its main sequence