Do you think the human species is part of the Earth’s ecosystem?

I think that humans would be part of the ecosystem because we produce carbon dioxide for plants, and without carbon dioxide, plants couldn't function. (This is just my opinion on the matter, but if this was a test question, I'd say yes.)

Explanation:

Hmmm that's a tough question. In my opinion I believe that they are because they some of us choose to have a role in the ecosystem by helping the Earth become more "green". Maybe think about this, how did we end up here on Earth? (This might go against your science class but we ended up here because God created us all.) I don't know if this helped but I hope that it did. I apologize if it didn't.

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."