Answer:
It is b to use a telescope
During photosynthesis, plants take the extra carbon from the air, make it into oxygen and then release the oxygen back into the air for us to breathe. The process of photosynthesis can help reduce global warming by removing the extra carbon in the air which allow the air levels in the atmosphere to be more balanced .
57.0 is it rounded to three sig figs. You count three spaces then round from there, which would be the zero and you would round down because the four is there.
