Natural Sciences
Grades 8
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Term: 1
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Contents
Term 1
Life and Living Things
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
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Unit 1: Photosynthesis and respiration
1.1 Photosynthesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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1.2 Respiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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Unit 2: Interactions and interdependence within the environment
2.1 What is ecology? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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2.2 Ecosystem. 17
2.3 Nutritional relationships. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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2.4 Energy flow: Food chains and food webs. . . . . . . . . . . . . . . . . . . . . . . . . 21
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2.5 Balance in an ecosystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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2.6 Adaptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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2.7 Conservation of the ecosystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
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Unit 3: Microorganisms
3.1 Types of microorganisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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3.2 Harmful microorganisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
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3.3 Beneficial microorganisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
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[2]
, Copyright© Leafy_Notes - may not be distributed.
Term 1: Life and lifestyle
Life and lifestyle
Photosynthesis Interactions and Microorganisms
interdependencies
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