Carbon Dioxide and Methane Are Now at Higher Concentrations Than

question 19

Multiple Choice

Carbon dioxide and methane are now at higher concentrations than any time within the last ________.

• A) 10 million years
• B) 10,000 years
• C) 370,000 years
• D) 4 million years

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Definitions:

Negative Frequency-Dependent Selection

Negative frequency-dependent selection occurs when rare genotypes have a fitness advantage simply because they are rare, helping to maintain genetic diversity within populations.

Pleiotropy

The genetic phenomenon where a single gene influences multiple phenotypic traits, demonstrating the complex nature of gene action.

Foraging Strategy

The behavioral patterns and techniques employed by animals, including humans, to find and gather food.

Allele Frequency

The relative frequency of an allele (variant of a gene) at a particular gene locus in a population, indicating genetic diversity.