The correct answer is D. Carbon dioxide.
The greenhouse effect is a natural process that warms the Earth’s surface. When sunlight hits the Earth’s atmosphere, some of the energy is reflected back to space, and some of it is absorbed and re-radiated by greenhouse gases. Greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, ozone, and some artificial chemicals such as chlorofluorocarbons (CFCs).
The greenhouse effect is essential to life on Earth. Without it, the Earth’s average temperature would be about 60 degrees Fahrenheit (33 degrees Celsius) colder, and the planet would be too cold for most life to exist.
However, human activities are increasing the amount of greenhouse gases in the atmosphere. This is causing the greenhouse effect to become stronger, which is leading to global warming.
The main greenhouse gas that is being emitted by human activities is carbon dioxide. Carbon dioxide is released into the atmosphere when fossil fuels such as coal, oil, and natural gas are burned. It is also released when forests are cleared and when land is used for agriculture.
The increase in carbon dioxide levels in the atmosphere is causing the Earth’s temperature to rise. This is having a number of negative effects on the planet, including melting glaciers, rising sea levels, and more extreme weather events.
It is important to reduce our emissions of greenhouse gases in order to mitigate the effects of global warming. We can do this by using less energy, by switching to renewable energy sources, and by improving energy efficiency.
A. Ozone is a gas that is found in the Earth’s stratosphere. It absorbs ultraviolet radiation from the sun, which helps to protect life on Earth. However, ozone can also be harmful to human health and the environment if it is found in the lower atmosphere.
B. Nitrogen is the most abundant gas in the Earth’s atmosphere. It is not a greenhouse gas, and it does not contribute to global warming.
C. Sulphur dioxide is a gas that is released into the atmosphere when fossil fuels are burned. It is a major contributor to acid rain, which can damage forests and lakes.
D. Carbon dioxide is a greenhouse
gas that is released into the atmosphere when fossil fuels are burned. It is the main cause of global warming.