All the places on Earth where life exists, including land, water, and the air.

All the water on Earth—like oceans, rivers, lakes, and even water underground and in the air.

The solid parts of Earth, including rocks, soil, and the layers beneath the surface.

The movement of carbon through the Earth’s systems—like the air, water, living things, and the ground.

The process where dead plants and animals are broken down by bacteria and fungi, returning nutrients to the soil.

The burning of materials (like wood or fossil fuels), which releases carbon dioxide into the air.

A change where substances are transformed into new substances, like when food is digested or fuel is burned.

A change in the form or appearance of a substance, but not its chemical makeup—like melting ice or breaking a rock.

Natural events that shape the Earth, like earthquakes, volcanoes, and the formation of mountains.

Activities done by living things, like breathing, growing, eating, and decomposing.

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2-5: Carbon Cycle

Carbon Cycle

Term	Definition
biosphere	All the places on Earth where life exists, including land, water, and the air.
hydrosphere	All the water on Earth—like oceans, rivers, lakes, and even water underground and in the air.
geosphere	The solid parts of Earth, including rocks, soil, and the layers beneath the surface.
carbon cycle	The movement of carbon through the Earth’s systems—like the air, water, living things, and the ground.
decomposition	The process where dead plants and animals are broken down by bacteria and fungi, returning nutrients to the soil.
combustion	The burning of materials (like wood or fossil fuels), which releases carbon dioxide into the air.
chemical process	A change where substances are transformed into new substances, like when food is digested or fuel is burned.
physical process	A change in the form or appearance of a substance, but not its chemical makeup—like melting ice or breaking a rock.
geological process	Natural events that shape the Earth, like earthquakes, volcanoes, and the formation of mountains.
biological processes	Activities done by living things, like breathing, growing, eating, and decomposing.

Created by: user-1948443

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