Match each term with the correct letter from the Figure below. Be VERY CAREFUL! The letter choices might shuffle out of order.
•wave height
•wave length
•crest
•trough

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

bc blah

explanation:

bc blah