The Earth

By  Lydia Giménez

The Earth is the third planet around the sun in our solar system. The earth is about 12,756 km. It's the first planet in the solar system where humans live. The earth has one moon. The moon's diameter is 27% of the diameter of the Earth. The diameter has 3,476 km.
The Earth orbits 149,600,000 km from de sun. The orbit of the Earth is close to begin circular. Also the Earth has four seasons: autumn, winter, spring and summer. The autumn is from September 21th to December. The winter is from 21th of December to 21th of March. The spring is from 21th of March to 21th of June. The summer is from 21th of June to 21th of September.
Also the Earth is hot. The temperature in the center  of the earth ranges from 2200 ºC to 4400 ºC. The hottest temperature record was on the continent of Africa, because of global temperature. The global temperature is caused by the excess of carbon dioxide and the water vapor. Also the Earth is composed of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and  amounts of other gases.
Life forms on Earth have modified the composition of the atmosphere since their evolution.