Some species require a large and diverse range. Although it may not significantly decrease the overall size of the range, how might fragmenting the range with a freeway or neighborhood lead to the extinction of the entire population, even if sufficient food is available in either region to sustain two smaller populations? Suggest a compromise that would allow the population to survive and allow for the road project or neighborhood.

What will be an ideal response?


The species may not be able to travel between breeding grounds and feeding grounds or the individuals may get killed trying to go from one region to the other. A sufficiently large corridor connecting the two ranges could be left undisturbed so the animals can freely move from one region to the other.

Biology & Microbiology

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Which event occurs during a strong El NiƱo year?

a. light rains in the central and eastern Pacific ocean b. upwelling of cold water in the western Pacific ocean c. death of phytoplankton in western coastal areas d. cold surface currents flowing from west to east e. strengthened equatorial winds

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When is asexual reproduction more likely to happen? a. Asexual reproduction is completely random when it occurs

b. During a relatively stable environment. c. Species cannot reproduce asexually. d. During a time of great change in the environment. e. During a stressful time in the species lifetime.

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Which of the following is most likely to follow an irruptive (boom and crash) growth curve?

a. elephants b. humans c. hippopotami d. moose e. insects

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In temperate-zone lakes, a __________ and a fall overturn cause vertical mixing of waters and trigger

a burst of productivity. Fill in the blank(s) with the appropriate word(s).

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