Which phrase describes air density?

increases as altitude increases

equals mass divided by volume

pushes molecules in one direction

exerts less pressure as it increases

What is one similarity between natural selection and artificial selection? A. It is not possible to have major changes in traits. B. Environmental factors do most of the "selecting." C. Offspring are extremely different from their parents. D.

Who was the first person to look at cells

How do whales bats and dolphins use echolocation? to scare away predators, to orient themselves and to find food, to attract males, or to tell other animals of their species where they are?

What is the connotation and denotation of confident

What are the solutions of the inequality? graph the solutions. - 12r 2 b. r - 12 d. r

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?

How do you make good grades?

What will happen to the pressure inside a rigid container of gas if some of the gas is allowed to escape? (Assuming no change in temperature)