The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

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#Question id: 11517

#Section 2: Evolution

Which dispersion pattern is most common in nature?

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#Question id: 10231

#Section 1: Ecology

Character displacement is results of competition that its operates on a

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#Question id: 16888

#Section 3: Mathematics and Quantitative Ecology

This is an example of:

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#Question id: 16877

#Section 3: Mathematics and Quantitative Ecology

Assume the cholesterol levels in a certain population have mean μ= 200 and standard deviation σ = 24. The cholesterol levels for a random sample of n = 9 individuals are measured and the sample mean x is determined. What is the z-score for a sample mean x = 180?

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#Question id: 10673

#Section 2: Evolution

Which of following attributes of parasite agent acts as a biological control is not necessary?