Answer :
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In Earth's atmosphere, the two gases believed by scientists to be greenhouse gases that are major contributors to global warming are:
1. Carbon dioxide (CO2): This gas is released into the atmosphere through human activities like burning fossil fuels (coal, oil, gas), deforestation, and other industrial processes. It traps heat from the sun in the atmosphere, contributing to the greenhouse effect and global warming.
2. Methane (CH4): Methane is another potent greenhouse gas that is released during processes like agriculture (from livestock and rice paddies), natural gas production, and decomposition in landfills. It is more effective at trapping heat than carbon dioxide, although it persists for a shorter time in the atmosphere.
These two gases play a significant role in the Earth's climate system and are key factors in the ongoing issue of global warming. It's essential to monitor and reduce their emissions to mitigate the impacts of climate change.
