As climate changes because of global warming, plant species' ranges in the northern hemisphere may move northward. The trees that are most likely to avoid extinction in such an environment are those that _____. a. have seeds that are easily dispersed by wind or animals b. produce well-provisioned seeds c. have seeds that become viable only after a forest fire d. disperse many seeds in close proximity to the parent tree
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As climate changes because of global warming, plant species' ranges in the northern hemisphere may move northward. The trees that are most likely to avoid extinction in such an environment are those that A. have larger, more contiguous established populations to begin with B. produce well-provisioned seeds C. have seeds that become viable only after a forest fire D. disperse many seeds in close proximity to the parent tree
Deniz E.
This graph shows the movement northward of wintering grounds of North American bird species. The trend closely mirrors the increase in average winter temperatures. What is one problem that could develop from birds using farther north areas? a. Abandoned wintering grounds are left with a poorer ecosystem. b. Movement northward leads to overcrowding of reproductive grounds. c. Food competition increases with birds that do not migrate. d. All of the above.
Explain how climate change might lead to a decrease in one population’s carrying capacity and an increase in the carrying capacity of a different population. a. Plant species that are drought-resistant would decline in warm temperatures whereas other species would thrive in number in such a climate. b. Plant species that are pest-resistant would thrive in warm temperatures whereas other species would decline in number in such a climate. c. Plant species that are drought-resistant would decline in cold temperatures whereas other species would thrive in number in such a climate. d. Plant species that are drought-resistant would thrive in warm temperatures whereas other species would decline in number in such a climate.
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