7.2.10

The Cycling of Materials

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Recycling Materials

The recycling (using again) of materials is essential as they provide the building blocks for future organisms. Two cycles that are particularly important for living organisms are:

Illustrative background for The carbon cycleIllustrative background for The carbon cycle ?? "content

The carbon cycle

  • Carbon is present in all living organisms.
  • When organisms die, the carbon is recycled so that it can be used by future generations.
Illustrative background for The water cycleIllustrative background for The water cycle ?? "content

The water cycle

  • This cycle describes how water moves on, above or just below the surface of our planet between different locations, such as rivers, oceans and the atmosphere.
  • In order for this cycle to be completed, water has to change state.

Jump to other topics

1Cell Biology

1.1What's in Cells?

1.2Cell Division

1.3Transport in Cells

2Organisation

2.1Principles of Organisation

2.2Enzymes

2.3Circulatory System

2.4Non-Communicable Diseases

2.5Plant Tissues, Organs & Systems

3Infection & Response

4Bioenergetics

5Homeostasis & Response

5.1Homeostasis

5.2The Human Nervous System

5.3Hormonal Coordination in Humans

5.4Plant Hormones

6Inheritance, Variation & Evolution

7Ecology

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