Multiple Choice
An organism's niche includes its habitat, its resource requirements, and its:
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48. Ecology
Introduction to Ecology
Multiple Choice
Which of the following is an abiotic factor that influences the organisms living in a salt marsh?
A
Presence of marsh grasses
B
Population of fiddler crabs
C
Predation by birds
D
Salinity of the water
Verified step by step guidance1
Step 1: Begin by understanding the term 'abiotic factor.' Abiotic factors are non-living components of an ecosystem that influence the living organisms within it. Examples include temperature, sunlight, water salinity, and soil composition.
Step 2: Review the options provided in the question. Identify which options represent biotic factors (living components) and which represent abiotic factors (non-living components).
Step 3: Analyze the first option, 'Presence of marsh grasses.' Marsh grasses are living organisms, so this is a biotic factor.
Step 4: Analyze the second option, 'Population of fiddler crabs.' Fiddler crabs are living organisms, so this is also a biotic factor.
Step 5: Analyze the third option, 'Predation by birds.' Predation involves living organisms (birds), making it a biotic factor. The correct answer, 'Salinity of the water,' is a non-living component and therefore an abiotic factor.
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