Organisms evolve over generations to become adapted to the environmental conditions to which they are exposed. The diversity of organisms that

occurs in any particular area thus may be largely determined by the abiotic factors limiting survivorship and reproduction of organisms in a region. Which of the following limit the range of Saguaro cactus in North America?

I) pollinators

II) sunlight

III) precipitation

IV) temperature

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#Question id: 12038

#Unit 7. System Physiology – Animal

If you put the following events in the order they occur in the human digestive system, the third event in the series would be:

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#Question id: 11362

#Unit 10. Ecological Principles

Within a trophic level, this term refers to groups of species that feed on similar resources and often have similar ways of life.

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#Question id: 10688

#Unit 10. Ecological Principles

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 of B= 1     β of A= .5       rB= .5         r A= .3                

AN= 500                  BN= 200

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

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#Question id: 23575

#Unit 8. Inheritance Biology

How much about the human genome consist of segmental duplications?

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#Question id: 4624

#Unit 11. Evolution and Behavior

What was the prevailing notion prior to the time of Lyell and Darwin?