The Earth-Our Home Planet

  

The Earth stands just in the middle among the nine planets in regard to size. Uranus, Neptune, Saturn & Jupiter are larger thanEarth while Mercury, Venus, Mars & pluto are smaller.

 

The Earth is our home-planet & has various forms of life on it. This life includes human-beings, animals, birds, insects, & plants. These forms of are only found on Earth because because it is at a proper

distance from the sun and has livable temperature in its various parts No other planets is said to have life on it.So, our earth is a unique planet in this respect.

The Earth is made of rock. It is under water or soil. Beneath the crust, the Earth is very hot. 

The study of is called geology. The atmosphere contains enough oxygen to support animal life. This gas is highly active and forms about 21% of the atmosphere.  About 78% of it is nitrogen. The remaining  1%  of it has dust, water-vapour and other gases-CO2, argon etc.

There are three layers of the earth  below its crust are-mantle,  outer core & inner core. The molten metal forms its inner core. It keeps moving and producing electricity inside the earth

The earth is believed to be 4500 million years old and has only one natural satelite (Moon).