The correct answer is C. Carbon dioxide.
Greenhouse gases are gases that trap heat in the atmosphere, causing the planet to warm. The main greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.
Nitrogen is
the most abundant gas in the atmosphere, but it is not a greenhouse gas. Helium is also not a greenhouse gas. Sulphur dioxide is a greenhouse gas, but it is not as important as carbon dioxide.Carbon dioxide is the most important greenhouse gas because it is the most abundant and has the longest lifetime in the atmosphere. Carbon dioxide is released into the atmosphere when fossil fuels are burned, such as coal, oil, and natural gas. It is also released when forests are cleared.
The increase in carbon dioxide in the atmosphere is causing the planet to warm. This warming is causing a number of changes to the planet, including rising sea levels, more extreme weather events, and changes in plant and animal life.
It is important to reduce our emissions of greenhouse gases in order to slow the rate of climate change. We can do this by using less energy, using renewable energy sources, and improving energy efficiency.