Chopping down trees with an ax in the backyard Collecting fall leaves Cutting grass with a gas-powered lawnmower Picking colorful wildflowers along the highway
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these does the MOST harm to the air?
Possibilities:
- Chopping down trees with an ax in the backyard
- Collecting fall leaves
- Cutting grass with a gas-powered lawnmower
- Picking colorful wildflowers along the highway

Cutting grass with a gas-powered lawnmower