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Which two components are primarily used to measure biodiversity?

Answer and explanation

Correct answer: Species richness and species evenness

Direct answer: B, species richness and species evenness. Species richness means the number of different species present in a community. Species evenness means how equally the total individuals are distributed among those species. For example, two communities may each contain four species, so they have the same richness, but one may have nearly equal populations while the other may be dominated by one species; their evenness is different. A describes physical or body traits, not the usual components of community diversity. C includes total abundance and area, which may be useful ecological information but do not by themselves show species variety and balance. D describes environmental conditions. Memory cue: richness = how many species; evenness = how balanced their numbers are.

Related tags

BiodiversitySpecies RichnessSpecies EvennessCommunity EcologyAbundanceAnd Classification SystemsBiodiversity And Classification SystemsThe Living World

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