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Ocean Ecosystem? At grade

Describes organisms found in varying ocean ecosystems.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Obtaining Energy Resource? At grade

Many factors go into determining how much energy a resource will provide.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Observations and Experiment? Basic

Using observations and scientific experiments to test hypotheses.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Observations and Experiment? At grade

Using observations and scientific experiments to test hypotheses.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Obscured Vie? Basic

Pollutants and acid rain from outside the region are deteriorating the air quality and having negative effects on the life in the Great Smoky Mountains National Park.

It is an educational content of CK ...

Nuclear Powe? Basic

How energy can be generated through nuclear reactions.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Not Exactly Permanen? At grade

Learn about permafrost: where it is, what it is, and the global consequences if it melts. Melting permafrost is an example of a positive feedback mechanism in the climate system.

It is an educational c ...

Nuclear Powe? At grade

How energy can be generated through nuclear reactions.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Not Enough Wate? Basic

Learn what happens to the human body when it experiences mild, moderate and severe dehydration.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged ...

Not Enough Oxyge? Basic

To learn how the human body responds to a low oxygen environment, reserchers spend months on Mount Everest.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you mu ...

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