User:Swati1911972/TWA/Earth





=Earth= The Earth is the third planet from the Sun. It is one of the four terrestrial planets in our Solar System. This means most of its mass is solid. The other three are Mercury, Mars, and Venus. The Earth is also called the Blue Planet, Planet Earth, and Terra.

The Earth is the only habitable planet in the solar system and supports millions of life forms, including humans, since it has air, land, water, and is at optimum distance from its sun, enabling the right temperature and topography.

According to scientific research, the earth is 4.5 billion years old. 79% of the Earth is covered by salt water oceans, while the other 21% is solid rocky terrain. The planet has many biospheres - habitats consisting of air, water, and land - supporting life.

The Earth rotates on its axis at the rate of one rotation in 24 hours, which constitutes one day. It also revolves around the sun in an elliptical orbit, with one revolution in 365.25 days.

A year is taken as 365 days, and every fourth year is a leap year with 366 days. The revolution also leads to changing seasons on the planet.





=Earth= The Earth is the third planet from the Sun. It is one of the four terrestrial planets in our Solar System. This means most of its mass is solid. The other three are Mercury, Mars, and Venus. The Earth is also called the Blue Planet, Planet Earth, and Terra.

The Earth is the only planet in the solar system where life exists. It has air, water and land to support life. It is home to millions of species of plants and animals, including humans.

Earth is at optimum distance from the sun, so it is neither too hot nor too cold.

According to the scientists, the earth is 4.5 billion years old. 79% of the earth is covered with salt water oceans, while the other 21% is rocky terrain. The planet has many biospheres -- land, water and air -- supporting life.