Theoretically, if the climate suddenly became colder globally, then the impact would be immense. Consider that many places around the world never see temperatures lower than 70 Degrees F. The animals, plants, insects, all life for that matter would be impacted, some to the point of extinction. Many plants will only pollinate and produce when cooled or heated to specific temperatures and so they would not produce. A single factor like a drop of 3 degrees globally would be enough, some scientists state, to severely impact crops because such a drop would begin killing the bees that are used to pollinate practically all crops that man depend on.
