If a bike rider uses chemical energy to push the pedals and that transforms into
mechanical energy, what happens to the
thermal energy generated by the body
from pedalling the bicycle (the bicyclist
gets hot)?

The thermal energy ends up going up in the sky because heat rises, and he will start to sweat as a result of his body trying to cool him off.

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

i dont have a visual in front of me, but i can you reason to try to get the right one. the graph should look like this, 0 to 6 there is a spike, 12 to 14 there should be a very low point. slight increase in the graph at 12 to 14, and flat 14 to 18

explanation: