Answer:
1. When Plankton decomposesd it will turn to a natural gas and oil which turn it to a fossil.
2.Well carbon goes into evaporation from the ocean and goes up to the air surface.
3.
Chemical Energy is like when you eat food after awhile your stomach acid will break it down.
Mechanical Energy is like windmill or you hammering a nail in wood.
Thermal Energy is like warming up something in the microwave
Electrical Energy is like a lamp or lighting.