What do we call the bioregion that is dominated by tall native grasslands, short grasses, or scrub vegetation in North America?
A) boreal forest
B) farmland
C) prairie
D) tundra
E) desert
C) prairie
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The ____________ is the accumulation of sediment that runs parallel to shore and marks the normal limit of sand
deposition by wave action. Fill in the blank(s) with the appropriate word(s).
The view held by both Malthus and Paul Ehrlich suggests that depletion of resource supplies due to greater numbers of people ________
A) will result in exponential population growth B) will lead to natural selection of the most fit individuals C) is a problem because some resources are limited and can be depleted D) is not a problem because new resources can always be found to replace depleted ones E) is not a problem because disease will limit population size
When the sample chamber of a polarimeter is empty which of the following statements is true?
A) The maximum transmission of light occurs when the polarizer and analyzer are parallel to each other. B) The maximum transmission of light occurs when the polarizer and analyzer are perpendicular to each other. C) The maximum transmission of light occurs when the polarizer and analyzer are at an angle of 120° to each other. D) Since the instrument is empty the positions of the polarizer and analyzer have no effect on the amount of transmission.
When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.?
What will be the ideal response?