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

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

Nitrogen cycle

Soil and yields

Food chemicals and there cycle

Health

digestion and labeling

Food standards and the agency

Diet and diabetes

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