Unit 3 Core 21st Century science (Need to know's and keywords)

Unit 3 core science 21st century science (B3, C3, P3)

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B3 Life on earth

Evolution

Fossils

Dna

Earths age

Variety of organisms

Natural selection

Evolution of humans

Inherited Characteristics

Extinction

Biodiversity

Food chains/webs

Central nervous system

Hormone and nerve impulses

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C3 Food Matters

Nitrogen cycle

Soil and yields

Food chemicals and there cycle

Health

digestion and labeling

Food standards and the agency

Diet and diabetes

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P3 Radioactive Materials

Atoms

Elements

Ionising Radiation

Alpha, beta and gamma a, b, y

Radioactive decay

Background/natural radiation

Half life...100...50...25...12.5...6.25

Uses, processes and jobs

Safety and risks of radiation

Dangers

Nuclear electricity production

Energy loss through processes

Renewable energy

Pros and cons of different electricity production

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