Greenhouse gases are those gases that remain present in the Earth’s atmosphere and absorb the Sun’s heat, preventing it from escaping back into space. These gases increase the Earth’s temperature, leading to issues like global warming and climate change.
Major Types of Greenhouse Gases
- Carbon Dioxide (CO₂): Produced by burning fossil fuels such as coal, gas, and oil.
- Methane (CH₄): Released from livestock, waste, and rice cultivation.
- Nitrous Oxide (N₂O): Emitted from fertilizers and industrial processes.
- Fluorinated Gases: Used in air conditioners, refrigerators, and various industrial applications.
Why Are They Called Greenhouse Gases?
A greenhouse is a glass structure used by farmers to grow plants in winter. It lets sunlight in but traps heat inside, keeping the environment warm.
Similarly, these gases in the Earth’s atmosphere allow sunlight to reach the surface but trap the heat when the Earth tries to radiate it back into space, causing the planet to warm. This process is why they are called greenhouse gases.
Summary
- Greenhouse gases naturally help regulate the Earth’s temperature.
- However, when their levels exceed normal limits, they disrupt the environmental balance, causing heatwaves, floods, droughts, and other ecological problems.