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प्रश्न
State three factors which have made life possible on the Earth and on no other planet.
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उत्तर
The factors which have made life possible on earth and on no other planet are as follows :
- Earth is the only planet in the Solar System which is neither too hot nor too cold.
- The atmospheric blanket around the earth protects it from ultra-violet and other deadly sun rays.
- The mixture of gases in the atmosphere is suited to the growth and survival of life.
- Plants, through the process of photosynthesis, take away carbon dioxide from the atmosphere and make oxygen available for animals to breathe.
- Oceans play a great supporting role. They cover three-fourths of the earths surface and are responsible for the operation of the hydrological cycle which makes water on land surface available.
- Circulation of many life cycles not make energy and food available but also process the wastes which otherwise would harm life.
संबंधित प्रश्न
How can you prove that the earth is a sphere by looking at the horizon?
Short Answer Question:
Name the members of the Solar System.
Short Answer Question:
What are the Jovian planets? Name them.
Fill in the blank:
Eratosthenes worked out the circumference of the earth to be _______ km.
Why is the following planet not inhabitable?
Saturn
Why is Mercury the hottest planet of the Solar System?
Who am I?
You can see me from the earth but the lighted part of me that you see changes every day.
Which of the statement(s) is/are true?
Statement I: Earth is called a watery planet.
Statement II: The rotation of the Earth causes seasons.
The biggest continent is ______________.
________ Percentage of our earth is covered by saltwater.
