Question

1. list 3 reasons why earth is capable of supporting life.

Explanation:

To determine why Earth supports life, we analyze key factors:

1. Suitable Temperature: Earth’s distance from the Sun (habitable zone) and atmosphere (greenhouse gases, ozone) maintain temperatures (≈ -88 to 58°C) allowing liquid water, essential for biochemical reactions.
2. Liquid Water: Abundant on Earth’s surface (oceans, lakes, rivers), water is a universal solvent for nutrients, waste transport, and cellular processes.
3. Atmosphere: Contains oxygen (for respiration), nitrogen (for proteins/DNA), and ozone (shields from UV radiation), while also regulating temperature and pressure.

Answer:

1. Earth is in the Sun’s habitable zone, maintaining temperatures suitable for liquid water.
2. Earth has abundant liquid water, critical for life’s biochemical processes.
3. Earth’s atmosphere (with oxygen, nitrogen, ozone) protects life, regulates temperature, and enables respiration.