The answer to this question is
burning trees
They saw how smoking effected the body since smoking was pushed as something good for a long time, a lot of people started smoking and after a few years doctors finally saw a difference between a smokers body and a non smokers body
Answer:
cellular respiration and photosynthesis work together by taking in energy such as the sun, or Co2 to convert that into energy and oxygen right back into the atmosphere.
Explanation:
The public is upset with the farms’ unnatural farming practices.
