1
Unit 3 – Life on Earth
2
1 – Biodiversity and the
distribution of life
3
4
5
6
2 – Energy in ecosystems
7
8
9
10
11
12
13
14
15
3 – Sampling techniques and
measurement of abiotic and biotic
factors
16
4 – Adaption, natural selection
and the evolution of species
17
18
5 – Human impact on the
environment
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