Question

write an essay on the earth uniqueness

Answer 1

The Earth is the only planet circling our sun on which life as we know it could (and does) exist. A brief glance at the Earth and all other known planets finds many startling contrasts. The Earth as a planet consists mostly of iron, oxygen, sulfur, silicon, magnesium, and nickel (total, 98%), with the other two percent consisting of about a hundred other elements. Like no other planet, ours is covered with green vegetation, blue-green seas, streams, rivers, mountains, and deserts which produce a spectacular variety of color and texture—all other known planets are covered with lifeless soil which varies only according to slight movements made by wind or mild air currents. Completely barren, the surface of most planets is totally in contrast to the Earth's with its blue lakes, green oceans, huge land masses and 500,000 islands. Even from a distance, its colors are quite lively—bright greens, blues and whites—whereas the surface of all other known planets are rather dull.
Some type of life is found in every niche on the Earth. Even in the extremely cold Antarctica, hardy microscopic beings exist in ponds, tiny wingless insects live in patches of moss and lichen, and even two types of plants flower yearly. From the top of the atmosphere to the bottom of the oceans, from the coldest part of the poles to the warmest part of the equator, life persists here. To this day no sign of life has been found on any other planet.
The Earth is immense—8,000 miles in diameter and weighing roughly 6.6 x 10
tons. If the Earth traveled much faster in its 292-million-mile-long orbit around the sun, centrifugal force would pull it away from the sun, and if too far, all life would cease to exist. If it traveled slightly slower, the Earth would move closer to the sun, and if it moved too close, all life would likewise perish. The Earth's 365 day, 5-hour, 48-minute and 45.51-second-round-trip is accurate to a thousandth of a second! If the yearly average temperature on Earth rose or fell only a few degrees, most life on it would soon roast or freeze. This change would upset the water-ice and other balances, with disastrous results. If it rotated on its axis slower, all life would die in time, either by freezing at night because of lack of heat from the sun, or by burning during the day from too much sun.



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Answer 2

Our Universe is very huge . It is made up of many many heavenly bodies like star , meteoroids, asteroids, planets etc .



Our earth is also one of them . Earth is in the Milky way galaxy . It is the only planet where life exists . Here found the atmosphere and water which are the two basic needs for survival of life.



Our earth is on 5 th rank according to size.


It's atmosphere is having 5 layers .



Our earth is spherical in size. It is commonly known as blue planet Because when we go above , we will found that it looks blue .



Our earth is covered by water and land .


It because when the earth was formed in starting it was a very big ball of volcanoes and when the reaction take place it rained for millions of years and the water got collected. The part of earth which got submerged is now sea and the above relief features are now the mountains. But in the sky it looks blue.







Earth is having a great variety of flaura and fauna . About 17-18 million of variety of flaura and fauna is on earth .



Our earth revolves around the sun . It complete one Revolution in 365¼ days .



It also rotate on its axis in 24 hours .



The rotation of earth is responsible for the day and night while the Revolution of earth is responsible for the seasonal changes in earth.



The earth is very beautiful. The really very much helpful for all of us . Today we are leaving a very comfortable life on earth all because of it .



We are having a very great loan of mother earth. We can't repay that loan .



Thanks dear mother earth !!