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Explanation:
Earth's ability to support life, compared to other planets, is due to a combination of factors that create a habitable environment. Here are some key reasons:
Presence of Liquid Water:
Earth has abundant liquid water, which is essential for all known forms of life. Water serves as a solvent for biochemical reactions and helps regulate temperature.
Optimal Temperature Range:
Earth's distance from the Sun places it within the "habitable zone," where temperatures allow for liquid water. This zone is neither too hot nor too cold, ensuring that water remains in a liquid state.
Atmospheric Composition:
Earth's atmosphere is composed of oxygen and nitrogen, with traces of other gases. It provides the necessary oxygen for respiration and protects life from harmful solar radiation through the ozone layer.
Stable Climate:
Earth has a relatively stable climate, moderated by its atmosphere and oceans. This stability is crucial for maintaining the environmental conditions that support life.
Nutrient-Rich Environment:
Earth has a diverse range of ecosystems and a nutrient-rich surface, providing the necessary resources for various forms of life to thrive.
In contrast, other planets in our solar system lack one or more of these critical conditions. For example:
Mars has a thin atmosphere and lacks stable liquid water on its surface, making it too cold and dry for Earth-like life.
Venus has an extremely thick atmosphere with high-pressure and high-temperature conditions, making it inhospitable for life as we know it.
Jupiter and Saturn are gas giants with no solid surface and extreme atmospheric conditions that are unsuitable for life.