Physics One paragraph explaining one of the following

Explain one of the following:

a. How heat engines work.

b. How nuclear power plants work.

c. What is nuclear fission and fusion?

d. How satellites are put into orbit, and the types of orbits.

e. How GPS works.

f. The nature of light.

g. How electric motors and generators work.

h. How nuclear radiation makes you sick.

i. The mechanism of global warming.