Which of the following is an example of when a model might be used in science?

to predict a solar eclipse

to measure the pH of water from a mine

to detect ozone in the atmosphere

to measure water flow

Community colleges have: A. highly selective admission requirements. B. a high tuition. C. flexible schedules. D. large classes.

Jill cut a 6-inch piece of string into pieces that are each 3/4 of an inch long. How many pieces of string did she cut?

Which statements about pangaea are true according to widely accepted theories

Select the correct answer. For which career role would a distance education course be useful? A. screenwriter B. authoring specialist C. journalist D. copy writer

A registrar can be found at any of the following except: a two year college a high school voting registration poles a four year college

P (A|B) represents the probability that A or B occurs A and B occur B occurs given that A has occurred A occurs given that B has occurred

Why does the moon appear to move toward the west in the sky? A) The rotation of the Moon changes its position in the sky. B) Earth orbits at a slower rate than the rate at which the Moon orbits Earth.

Years ago, there were much films on Biblical themes; now, the subject is almost taboo. A. Ago B. Much C. On D. Now E. No Error

How many ways can Pete, Mary, Sue, and Joe stand in a line if Joe and Sue cannot stand next to each other? A. 4 B. 6 C. 12 D. 16 E. 18

What is a socially healthy person