Plants take up carbon dioxide from the air and nutrients from the soil. this is an example of interactions between the

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

i think it would be 5

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form