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What is the Earth's biosphere composed of?

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Earth is made up of four distinct yet connect spheres. In this video lesson, you will learn about where each sphere is found on Earth, as well as... read more

The biosphere is made up of all that is living on earth, from the smallest bacterium to the largest whale. It includes between 3 and 30 million species of plants, animals, and fungi, and also two kinds of single-celled living things: those without nuclei ("prokaryotes") such as bacteria, and those with nuclei ("eukaryotes") such as protozoans. read more

The structure of the Earth is like an onion; it has multiple layers. Earth's layers consist of the crust, mantle and core. Several elements make up the composition of Earth. read more

The Earth was formed from the inside out, beginning with the core, which was then surrounded by a dense mantle and finished with a solid crust. Then, the atmosphere and hydrosphere formed through the release of gases and liquid particles from the surface. read more

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