10.  How does each fact impact greenhouse gas concentrations?(4 points)

increase greenhouse gases decrease greenhouse gases

Living trees hold lots of carbon in their trunks, branches, roots, and leaves.

Dead trees stop performing photosynthesis.

Living trees perform photosynthesis.

Dead trees decay.

- Living trees holding lots of carbon in their trunks, branches, roots, and leaves helps to decrease greenhouse gas concentrations by storing carbon instead of releasing it into the atmosphere.

- Dead trees stop performing photosynthesis, which can lead to an increase in greenhouse gas concentrations as they decompose and release stored carbon back into the atmosphere.
- Living trees performing photosynthesis helps to decrease greenhouse gas concentrations by absorbing carbon dioxide from the atmosphere.
- Dead trees decaying can lead to an increase in greenhouse gas concentrations as the stored carbon is released back into the atmosphere during the decomposition process.