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What is an abiotic factor, and how can it affect organisms?
A
To compare overall abundance in two defined areas, quadrats should be placed at random positions to reduce selection bias.
B
A non-living physical or chemical feature that affects organisms.
C
It affects mineral ion availability and root or microorganism activity, favouring different species.
D
A correlation between light intensity and abundance does not prove light is the only cause because other factors may change along the transect.
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4.1.6 Abiotic and biotic factors affecting communities Flashcards
20 flashcards on OCR GCSE Biology 4.1.6 Abiotic and biotic factors affecting communities: the key terms, definitions and processes you need to recall for the written papers.