The principle of superposition is used to a. determine the absolute age of rocks. c. determine the relative age of rocks. b. determine how rocks are formed. d. determine how rocks are changed.

Need in all of themmm only answer if you know pls

Which is not true about oxygen-17 and oxygen-18?

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.