Question

what is earth ?
Explain how earth made?

Answer 1

earth is the 3rd planet in the solar system found in the milky way galaxy which sustains life.it is also known a s blue plant as 70% is covered by water.
it is made of hard rocks and layers of minerals and it is covered by atmosphere containing 20%oxygen and 79% nitrogen
it has 3 layers namely crust also known as lithosphere which has two layers sial and sima , mantle which contains molten magma and core also known as barysphere