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Natural Sciences
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The parts of Earth where all living things exist.
Biosphere
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A part of the atmosphere that contains ozone and protects Earth from harmful ultraviolet rays.
Ozone Layer
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Dangerous ultraviolet rays from the sun that can harm living organisms.
Harmful Ultraviolet
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A large landmass like Africa, Europe, or Asia.
Continent
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All the water on Earth, including oceans, lakes, and rivers.
Hydrosphere
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Materials that come from living things, such as plants and animals.
Organic Components
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Substances in the air, like oxygen and nitrogen.
Gases
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The process of breaking down organic matter into simpler substances.
Decompose
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The science that studies Earth, its rocks, and the processes that shape it.
Geology
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Solid materials made of minerals that form Earth’s surface.
Rocks
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The theory that Earth's outer shell is divided into plates that move and cause earthquakes.
Tectonic Plates
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The solid outer part of Earth, including the crust and the upper mantle.
Lithosphere
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The layer of gases surrounding Earth that protects life.
Atmosphere
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