1) The movement of organisms into a range is called a) immigration. b) emigration c) carrying capacity. d) logistic growth e) density f) population shift. 2) Which of the following could describe a population that is decreasing in size? a) The birthrate and the death rate remain the same. b) The death rate is becoming lower than the birthrate. c) geographic range d) The death rate is becoming higher than the birthrate. e) The death rate is constant and the birthrate is increasing. f) habitat is larger than the population size 3) If immigration and emigration numbers remain equal, which of these could cause a slowed growth rate? a) increased birthrate b) constant death rate c) decreased birthrate d) the type of climate it lives in. e) their niche f) constant birthrate 4) which one of the following does not play a role in a population growth rate? a) birth b) death c) emigration d) geological range e) immigration f) leaving from a group 5) Suppose that a species of toads is introduced into a new environment in an attempt to reduce the population of insects. The toad has no natural predators in the new environment. The toad population would most likely a) increase logistically. b) decrease rapidly and die out. c) remain the same d) crash  e) migrate f) increase exponentially. 6) Which factor might NOT contribute to an exponential growth rate in a given population? Which factor might NOT contribute to an exponential growth rate in a given population? a) lower death rates b) higher birthrates c) less competition d) reduced resources e) unlimited resources f) immigration 

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