Compare the efficiency of saturated and unsaturated hydrocodone as a fuel in automobile.​

an unsaturated hydrocarbon is more reactive. saturated molecules have only sigma bonds, which are very stable and hard to break. unsaturated molecules, however, have pi bonds, and they are weaker. they deform the orbitals slightly and are more strained.

- decrease the number of plants and animals living in the water.

what is the question here. i think you messed up.