How will the level of carbon in the atmosphere change if humans do nothing to reduce their impact on the carbon cycle?

It will keep rising above 400 parts per million. Carbon is released into the atmosphere through the burning of fossil fuels. It will likely not go down for decades.

the correct answer is(the type of energy described here is potential energy.)

explanation: now if the person holding the bow and arrow has now let go. the arrow shoots forward toward its target. the   type of energy then becomes