Biological systems
Maintaining stable body conditions
Homeostasis is the response to changing conditions that keeps the body in a stable state. Nerves ensure that temperature remains steady whilst hormones keep blood sugar at the correct concentration.
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Forces, electricity and waves
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Materials
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Fractional distillation of crude oil
The majority of our fuels and plastics are derived from oil. Crude oil can be separated into different fractions using fractional distillation.
Planet Earth
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Observing and exploring space
Observation of the universe has improved our understanding of its age, its size and the composition of stars.
Topical science
How do science and technology impact society?
It is important that scientists communicate their work with the public, other scientists and politicians. This means decisions can be made that consider the risks, benefits, costs and ethical issues.
Critically analysing scientific issues
It is important that scientific issues are discussed and critically analysed to maintain public trust in the work of science. This means giving consideration to the ethical, moral, environmental, social or political implications of the issue and then developing an informed argument.
Carbon dioxide in the atmosphere. Video
The greenhouse effect and the importance of balancing carbon dioxide in the atmosphere.