What would happen if earth's axis of rotation were not tilted but instead were perfectly perpendicular to the plane of its orbit around the sun?

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

The energy released by a nuclear fusion reaction is produced when

Ihave this 50 question test the layer of earth's atmosphere where atoms and molecules escape into space is referred to as the a) exosphere b) ionosphere. c) mesosphere d) thermosphere