burning a forest burning fossil fuels digging a new landfill spraying crops with chemicals
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Human actions affect the environment. Which human action affects the smallest area of the environment?
Possibilities:
- burning a forest
- burning fossil fuels
- digging a new landfill
- spraying crops with chemicals

digging a new landfill