What is the effect of the change in the amount of carbon dioxide in the air from 200 years ago?

- It reduces the amount of plant life wordwide
- Contributes to global warming
- Reduces the number of animal species worldwide
- Helps glaciers near North Pole

3. Alexander von Humboldt and carl ritter supported what idea?

Question

What is the effect of the change in the amount of carbon dioxide in the air from 200 years ago? 

- It reduces the amount of plant life wordwide
- Contributes to global warming
- Reduces the number of animal species worldwide
- Helps glaciers near North Pole 

3. Alexander von Humboldt and carl ritter supported what idea?

anonymous · Answer

The effect of the change in the amount of carbon dioxide in the air from 200 years ago, is that it contributes to global warming.

anonymous · Answer

Oh gosh thanks so much!!! :)

anonymous · Answer

Sure! Feel free to press "Best Response.";)