GEOLOGY

EARTH SCIENCE

CLIMATE AND ENVIRONMENTAL CHANGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does atmospheric carbon dioxide affect global temperature?
A
more CO2, lower temperature
B
less CO2, lower temperature
C
less CO2, higher temperature
D
more CO2, higher temperature
Explanation: 

Detailed explanation-1: -The carbon dioxide molecules present in the atmosphere absorb this heat energy. Hence, an increase in the amount of carbon dioxide molecules in the atmosphere also increases the heat energy, which increases the temperature of the Earth. This leads to global warming.

Detailed explanation-2: -Without carbon dioxide, Earth’s natural greenhouse effect would be too weak to keep the average global surface temperature above freezing. By adding more carbon dioxide to the atmosphere, people are supercharging the natural greenhouse effect, causing global temperature to rise.

Detailed explanation-3: -These may include headaches, dizziness, restlessness, a tingling or pins or needles feeling, difficulty breathing, sweating, tiredness, increased heart rate, elevated blood pressure, coma, asphyxia, and convulsions. The levels of CO2 in the air and potential health problems are: 400 ppm: average outdoor air level.

Detailed explanation-4: -Human Activity Is the Cause of Increased Greenhouse Gas Concentrations. Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Detailed explanation-5: -In the past few hundred thousand years, carbon dioxide levels and global temperature have fluctuated greatly. At low atmospheric carbon dioxide levels, global temperature has been observed to be relatively low. At high atmospheric carbon dioxide levels, global temperature has been observed to be much higher.

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