Question

mention two important features of earth that make it a planet suitable for life?
answer this question fast plz!!!​

Answer 1

• Earth is the only planet that uses the Sun’s light as useful as a source of energy. That energy is used to convert elements, by living things, into a useable form. A plant uses the energy provided by the sun to drive photosynthesis and provide food to grow. As a by-product, oxygen is released which we then use as an energy source of our own.

• It is the layers of gases surrounding the earth that consists of exosphere, thermosphere, mesosphere, stratosphere and troposphere. The air content and favourable atmospheric pressure also supported life of most creatures. The air content of carbon dioxide on the Earth is less than that of planets like Venus and Mars. Hence, the less air content of carbon dioxide helps to moderate the Earth's temperature and is absorbed by plants during photosynthesis to produce oxygen.
• Water is very important for life because it contains the oxygen needed for life and allows life-providing molecules to move around easily. It continually changes its form through the water cycle. The process by which water continually changes its form and circulates between oceans, atmosphere and land is known as the water cycle.  
• The major sources of fresh water are the rivers, ponds, springs and glaciers. The ocean bodies and the seas contain salty water. The water of the oceans is salt or saline as it contains a large amount of dissolved salts. Most of the salt is sodium chloride or the common table salt that we eat. The earth is covered by three-fourth of the water. 97.3% water is saline or salty in oceans and seas, 3% is fresh water that consists ice-cap, ground water, fresh water lakes, inland and salt lakes.