What impact does environmental resistance have on a population? What kind of population distribution patterns occur in communities?
· Environmental resistance is the effect of limiting factors on an environment. Limiting factors in an environment can slow the rate of population in addition to regulating the distribution of organisms.
· A random distribution of a population indicates that there is no impact of one organism on that of another. The conditions in the environment are the same throughout. This is a very rare type of distribution.
· Clumped patches of distribution are the most common form of distribution. There are optimal conditions that occur throughout the environment. Patches can be a result of nutrient concentration, initial population dispersal, and social interactions.
· Uniform distribution occurs when the organisms in a community are equally spaced from one another. This is the rarest form of distribution in communities.
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A) Russia B) Canada C) Mexico D) England E) Norway
Atmospheric pressure changes ____
A) more rapidly in the horizontal direction than in the vertical B) more rapidly in the vertical direction than in the horizontal C) at the same rate in the horizontal and vertical directions D) more rapidly in the vertical direction over land than over the ocean
Although considerable variation exists around the world, globally the percent of fossil fuels that are used for the primary energy supply is more than
A) 85%. B) 60%. C) 50%. D) 35%.
Which of the following best describes how New Mexico and Arizona became part of the United States?
A) The United States went to war with Spain in 1821 to gain control of these territories. B) American settlement intensified after 1821, which allowed them to buy the entire region from Spain via the Gadsden Purchase. C) The United States annexed the Republic of Texas in 1845, which resulted in the Mexican-American War. D) The United States cleared out the Native Americans living in the region and settled it before Spain or Mexico could.