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ZIMSEC O-Level Combined Science

7.2.6.5Global warming

Global warming in ZIMSEC O-Level Combined Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic42 practice questions2 lessons

Overview

Form 4.

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.2.6.5.1Define global warming and list its causes, including combustion, veld fires and deforestation.

Lessons

  • Greenhouse gases and climate change

    35 min

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  • The enhanced greenhouse effect and climate change

    18 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Global warming: sample question

1 mark

True or false: without any greenhouse effect, the Earth would be too cold for most life.

Is the statement true or false?

Turn Global warming into a strength.

Practise with instant marking, see your mastery grow and get a study plan built around your exam date.