2. How is the greenhouse effect helpful for life on Earth?

The greenhouse effect is a natural process that helps to maintain the Earth's temperature and make it habitable for life. Without the greenhouse effect, the Earth's average temperature would be around -18°C (0°F), which is too cold for most forms of life to survive.The greenhouse effect works by trapping heat from the sun in the Earth's atmosphere. Certain gases, known as greenhouse gases, absorb and re-emit the sun's heat, preventing it from escaping back into space. The main greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.While the greenhouse effect is essential for life on Earth, human activities have increased the concentration of these gases in the atmosphere, leading to an enhanced greenhouse effect and global warming. This has caused a range of negative impacts, including rising sea levels, more frequent and intense heatwaves, and changes in precipitation patterns.In summary, the greenhouse effect is helpful for life on Earth because it helps to maintain a stable and habitable climate. However, it is important to note that human activities have disrupted the natural balance of the greenhouse effect, leading to global warming and its associated impacts.