Question

Who was one of the first scientists to realize the effects of CO2 in the atmosphere?

Answer 1

Answer:

Who: Svante Arrhenius.

When: Claimed in 1896 that fossil fuels has a negative effect on our atmosphere.

How: Svante Arrhenius proved that fossil fuels had a negative effect by calculating the output of buildings that emit fossil fuels, and lead to the conclusion by his calculations that the industry might one day bring global warming. Svante Arrhenius' theory of electrolytic dissociation and his model of the greenhouse effect also helped him to prove that his remarks about fossil fuels and global warming is true.

Where:

I cannot find any source that mentions the where. What do you mean by where?

I hope my other information help you. I apologies to only be able to answer partially.