Is this a phone number calling you that you're trying to identify?
Answer:
carbon dioxide
carbon in the Earth's atmosphere exists in two main forms: carbon dioxide and methane.
Many factors, both natural and human, can cause changes in Earth's energy balance, including: Variations in the sun's energy reaching Earth. Changes in the reflectivity of Earth's atmosphere and surface. And Changes in the greenhouse effect, which affects the amount of heat retained by Earth's atmosphere.
Answer:
The presence in the air of one or more contaminants in such a concentration and of such duration as to cause a nuisance or to be injurious to human life, animal life or vegetation.
14. Which of the following statements best describes 21st-century migration flows to the United States?<span>Large numbers of immigrants and migrant workers, including skilled and unskilled laborers and many with advanced degrees, are coming to the United States from South and Central America.
Plz give me branliest</span>
