Question

1. research - what are humans doing to decrease carbon found in fossil fuels and moved into the atmosphere?
2. research - how can humans decrease the amount of carbon being added into the atmosphere?

Explanation:

The questions are about human actions to reduce carbon emissions (from fossil fuels) into the atmosphere. This relates to Environmental Sciences (a subfield of Natural Science) as it deals with environmental issues, climate change mitigation, and human impacts on the environment.

Answer:

Natural Science - Environmental Sciences