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What is the name given to the square frame used for sampling organisms in an environment?

User Lakerz
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Quadrats are square frames of wire usually 0.25 m 2. They may contain further wires to mark off smaller areas inside, such as 5 cm × 5 cm or 10 cm × 10 cm squares. These are placed on the ground to look at the plants or slow-moving animals within them.
User Pavel Savara
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