You are presented with the question "What has a negative impact on an ecosystem?" and the following answer choices: 
- health
 - Pollution
 - Pesticides
 - time
 - disease
 - sunlight
 - loggers
 - Cars

Now knowing that cutting down trees has a negative impact on an ecosystem and loggers have been careless in where they cut down trees, choose the best answer.


 

       loggers  