Characteristics of the Earth that are Necessary to Support Life
Earth's age
4.543 billion years old
Size and distance from the sun
Affects the ability to hold the amount of atmosphere.
High temperature
Breaks down important biological molecules.
Greenhouse gases
Carbon dioxide and methane
Position from the sun
Helps to harness enough energy from the sun.
Gravity
Helps to sustain atmosphere.
Water
Important for biological process.
Temperature
It influences how atoms, molecules or organisms move.
Atmosphere
Provides insulation and shields Earth from sun and meteorites.
Atmosphere
Provides nitrogen and carbon dioxide.
Ozone layer
Shields Earth from harmful UV radiation.
Low temperature
Slows down chemical reaction and produces ice that makes water unavailable.
Energy
Supports biological process.
Greenhouse gases
Traps heat and avoid our planet from freezing.
Nutrients
Used to build and maintain body structure.
Processes that recycle nutrients
Water cycle, carbon and oxygen cycle, phosphate and nitrogen cycle, and volcanism
5 biological factors in order to live
Water, temperature, atmosphere, energy and nutrients
