A majority of the greenhouse-gas emissions released into the atmosphere is comprised of
a. methane
b. carbon dioxide***
c. oxygen
d. nitrous oxide
Yes, b.
To determine which option is correct, we need to understand the composition of greenhouse gas emissions.
Greenhouse gases are gases that trap heat in the Earth's atmosphere and contribute to global warming and climate change. The most important greenhouse gases are carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases.
While all of these gases contribute to greenhouse gas emissions, the majority of global greenhouse gas emissions are comprised of carbon dioxide (CO2). It is estimated that CO2 accounts for around 75% of all greenhouse gas emissions.
Therefore, the correct answer is option b. Carbon dioxide.