Quadrates are used to estimate the population size of an organism in two different areas.
All ecosystems are made up of a number of populations which formed the community.
The technique is called quadrating, it is based on squares and can be made from an material.
They form square grids which can consist of 0.25 meter or 1 meter.
Quadrates are a method of sampling different locations so populations can be compared in two different locations.
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