For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?

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#Question id: 3442

#Section 2: Evolution

You discover a rare new bird species, but you are unable to observe its mating behavior. You see that the male is large and ornamental compared with the female. On this basis, you can probably conclude that the species is

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#Question id: 12337

#Section 1: Ecology

Which of the following levels of organization is arranged in the correct sequence from most to least inclusive? 

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#Question id: 11770

#Section 1: Ecology

Natural selection in an animal population results in narrowing of the range of phenotypic variation but no change in the average phenotype. What kind of selection is this population experiencing?

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#Question id: 10866

#Section 2: Evolution

A form of competition, found in desert shrubs and sponges, in which one organism releases a chemical into the environment that inhibits another, is referred to as

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#Question id: 11978

#Section 1: Ecology

Which of the following statements about the ocean pelagic biome is true?