Which attributes describe nonrenewable resources? check all that apply.

exist in fixed amounts
are unlimited
cannot be replaced in a short time
are replaced faster than they are used
are used faster than they are replaced

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.