Question

6 multiple choice 1 point what is the affect of deforestation on the carbon cycle?
○ increase in the amount of co₂ in the atmosphere
○ deforestation has no impact on the carbon cycle
○ increase in the amount of photosynthesis
○ decrease in the amount of co₂ in the atmosphere

Explanation:

Trees perform photosynthesis, taking in $\ce{CO_2}$ from the atmosphere and storing carbon. Deforestation reduces the number of trees, so less $\ce{CO_2}$ is taken in via photosynthesis, and also, when trees are cut or burned, stored carbon is released as $\ce{CO_2}$. This leads to an increase in atmospheric $\ce{CO_2}$. The option "Deforestation has no impact on the carbon cycle" is wrong as deforestation clearly affects it. "Increase in the amount of photosynthesis" is wrong because fewer trees mean less photosynthesis. "Decrease in the amount of $\ce{CO_2}$ in the atmosphere" is wrong as explained, deforestation increases atmospheric $\ce{CO_2}$.

Answer:

A. Increase in the amount of $\ce{CO_2}$ in the atmosphere