Why would a desert ecosystem that is dry and shady support less biodiversity than a sunny forest with frequent rainfall?

The desert ecosystem can support fewer plants to provide a source of carbon.

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Explanation:

the allele for unattached earlobes is dominant over the allele for attached earlobes. In a population if “500 individuals”, 25 percent show the recessive phenotype. How many individuals would you expect to be heterozygous for this trait?

possible answers:

• 75

•125

•200

•25