Question

Explain the evolution of earth

Answer 1

Explain the evolution of earth.

Answer 2

Hi mate,

Evolution of the Earth:-

• The Earth began to form around four and a half billion years ago.
• The Earth has reached its present form through several phases.
• It began as a ball of swirling dust and clouds, and passed through a molten stage.
• At that time, the earth was very hot and was constantly bombarded by massive rocks and other materials from the space. In this way, the size of the Earth grew.
• The Earth was so hot that it was molten. Due to this, the heavier substances formed the part of the molten core, and the lighter substances rose to the surface and cooled. Slowly, an upper crust of lighter and cooler materials formed covering the molten interior.
• As the Earth's interior continued to cool, It contracted and the outer crust wrinkled, forming ridges and basins.
• The rains filled the the great basins on the Earth's crust with water. Thus, the oceans were formed.
• The atmosphere of the Earth consisted of different kinds of gases including water vapours. But it didn't have oxygen which is necessary for us. It took a long time for the air we breathe to develop.
• For perhaps one half of the long span of the earth's history, the planet earth remained lifeless. Then, life appeared in the oceans. It slowly evolved into diverse plants and animals

Hope it helps (•‿•)