Which of the following is NOT a way planets heat up during formation. Radioactivity
Differentiation
Convection
Accretion

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a