nobody really knows.... it was so long ago it's almost impossible to know for sure when and how.
The sun gets closer to the earth and causes the earth to a perfect climate for plants and animals to procreate.
Biosphere= the part of the earth where plants and animals live.
The carbon dioxide that plants take in come from animals. The oxygen that animals take in come from the plants.
You would fins plants and animals in the troposphere, where we live on earth
The only planet that we know of with plants and animals is Earth.
Carbon is a chemical substance found in the Earth but not formed by plants or animals.
Unicellular plants and animals were first forms of life on Earth
Earth. Animals and plants live all over the earth. You can look for larger concentrations in jungles.
The rich variety of animals and plants is biodiversity.
plants need carbon dioxide which come from animals respiration
Tiny remains of animals and plants in streams come from the mountains. When it rains, these remains are washed down the mountains toward the streams.
Earth does a lot of the water. It supports plants, animals, humans and soil