What do YOU think of global warming? ​

I think global warming refers to the exceptionally rapid rise in the Earth's average surface temperature during the last century, owing mostly to greenhouse gases created by mankind burning fossil fuels. Global warming refers to the exceptionally rapid rise in the Earth's average surface temperature over the last century, which is mostly attributable to greenhouse gases created by mankind burning fossil fuels.

Explanation:

I think global warming is something the government is using to hide a bigger problem

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."