1.Climate suitable for living beings, 2. bountiful oxygen supply, 3. gravity that keeps us on the ground. (Not too light that we're floating off into space or too heavy that we're crushed).
Oxygen, Water, Sun
heat. light. and water
Water
plant life
atmosphere
STDs
Photosynthetic cyanobacteria were the first organisms to produce oxygen. The effect of their oxygen production was that the earth became an environment which was suitable for life.
the atmosphere forms a protective boundary between earth and space and provides conditions that are suitable for life
the inhabitants could have special adaptations, such as fish have gills that allow them to breathe under water.
life on earth just pure stupid
water
STDs
The suitable temperature range for the development of life on earth is different from the suitable range once life has developed. Once life has a strong foothold, evolution allows life to adapt to both increasing and decreasing temperatures, until it is able to survive in extreme environments at both ends of the scale.
Liquid water.
TemperatureOxygenWater
Scientists study the characteristics that make life on earth possible so they can figure out when life will know longer be possible. They also want to know what causes life to not be possible.
Life on Earth is possible because the atmosphere, and the whole environment, is suitable to support life.
Scientists study the characteristics that make life on earth possible so they can figure out when life will know longer be possible. They also want to know what causes life to not be possible.
its red and colder and not suitable for life...yet
Out of all Planets known, Earth has the best weather conditions for life; the only planet with life.
Earth is able to support diversity of life: It has the suitable atmosphere which is made up of different gases. It has a moderate temperature as it is not to far and not to close to the sun. It has the a suitable amount of water covering 2/3 of the Earth's surface.
Liquid water, a suitable mix of atmospheric gases, proximity to the sun, the magnetosphere, Earth's size; all make life possible on Earth.