SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nitrogen
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Argon
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Carbon dioxide
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Sodium hydrogen
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Detailed explanation-1: -In the atmosphere, carbon exists primarily in the form of carbon dioxide (CO2) and methane gas (CH4).
Detailed explanation-2: -Carbon is the foundation of all life on Earth, required to form complex molecules like proteins and DNA. This element is also found in our atmosphere in the form of carbon dioxide (CO2).
Detailed explanation-3: -The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation.
Detailed explanation-4: -The concentration of carbon dioxide in Earth’s atmosphere is currently at nearly 412 parts per million (ppm) and rising. This represents a 47 percent increase since the beginning of the Industrial Age, when the concentration was near 280 ppm, and an 11 percent increase since 2000, when it was near 370 ppm.