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Describe quadrats.

What are quadrats useful for collecting?

How would you work out the amount of a certain species in a given area, using a 1m x 1m quadrat.

Name the key where the question has two possible answers.

What six physical features may effect how living organisms are distributed.

What is biodiversity?

Name two artificial ecosystems.

What are lakes? and can you name another?

How do you work out population size from the capture, re-capture method.

Explain the effect of sample size on the accuracy of an estimate of population size.