Please choose the correct answer to the question: Forests have been cut and burned so that the land can be used to raise crops. Which consequence does this activity have on the atmosphere of Earth?

Answer1: It reduces the amount of carbon dioxide production. Answer2: It reduces the production of oxygen. Answer3: It decreases the greenhouse effect. Answer4: It decreases pollutants in the air.

Answer format: answer1/answer2/answer3/answer4