OCR Biology- AS- Biodiversity and Evolution

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Module 3- Biodiversity and Evolution

2.3.1 Biodiversity

a) Key definitions

Species- a group of individual organisms which have similar appearance, anatomy, physiology, biochemistry and genetics whose members are able to freely interbreed to produce fertile offspring.

Habitat- The place where an organism lives.

Biodiversity- the variety of life or range of organisms to be found.

b) Biodiversity at different levels

Habitat- the range of habitats in which different species live.

Species- the number of different species.

Genetics- the genetic variation between individuals within a species.

c) Sampling is needed to measure the affect that humans have on the environment to find out the impact that we have on the natural world. EIA's are used estimate the effect of a planned development of the environment.

d)