Global Warming

1) Global warming is the warming near the earth's surface that results when the earth's atmosphere traps the sun's heat. (Complex sentence)
2) The earth is getting warmer. (Simple sentence)
3) The changes are small, but they are expected to grow and speed up. (Compound sentence)
4) Global warming will affect weather everywhere, plants and animals, also people; humans are warming the earth's atmosphere by burning fuels, cutting down forest, and by taking part in other activities that release certain heat trapping gases into the air, here in Crucitas, Costa Rica, we have an special situation that it has been dangerous to our future generation as it Crucita’s mining. (Compound – Complex sentence)