The following figure shows distribution pattern of species. 

Based on the above, which of the following distribution correct?

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#Question id: 4600

#Section 2: Evolution

Scientific theories ________.

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#Question id: 11517

#Section 2: Evolution

Which dispersion pattern is most common in nature?

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#Question id: 3364

#Section 2: Evolution

Which of the following equations represents the corresponding equilibrium for a locus with three alleles p, q and r of diploid individuals? (P, Q and R represent the frequencies of p, q and r, respectively)

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#Question id: 12141

#Section 1: Ecology

The density and spacing of individuals within suitable habitat and the proportions of individuals in each age class comprise a population's __________. 

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#Question id: 12755

#Section 5: Applied Ecology & Evolution

Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?