1) Earth's temperature range: The temperature on Earth is within the range that allows water to exist in liquid form. The average temperature of the Earth is about 15 degrees Celsius (59 degrees Fahrenheit), and the temperature range on the Earth's surface is from about -50 degrees Celsius (-58 degrees Fahrenheit) to about 50 degrees Celsius (122 degrees Fahrenheit). This temperature range is narrow enough to allow liquid water to exist on the Earth's surface, but not too narrow to prevent water from evaporating or freezing.

2) Earth's atmosphere: The Earth's atmosphere contains a variety of gases, including water vapor, carbon dioxide, and oxygen. These gases create a greenhouse effect that helps to keep the Earth's temperature within a range that allows liquid water to exist. Without this greenhouse effect, the Earth would be too cold for liquid water to exist on its surface.

The combination of the Earth's temperature range and the composition of its atmosphere makes it a unique planet in our solar system. These two factors allow liquid water to exist on the Earth's surface, which is essential for life as we know it.