Question

which are the main contituents a atmosphere
​

Answer 1

Answer:

Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

in the average temperature of the Earth due to the accumulation of greenhouse gases in the atmosphere

The most harmful greenhouse gases in the atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, ozone, chlorofluorocarbons and hydrofluorocarbons

Effect of global warming and greenhouse effect is seen in the rising sea levels that can in turn cause floods and harm the aquatic life

Answer 2

Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent