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Environmental Change Quick Check

1. Which of the following species would have the greatest chance of going extinct?
*a species with a slow reproduction rate and very little genetic variation living in a changing environment

2. Which of the following is believed to be common among all mass extinction events?
*a significant change in the global climate

3. Imagine two populations of penguins live in the same ecosystem. One population begins to exchange stones as a mating ritual while the other population begins to dance by shifting from one foot to the other. Individuals from each population will only mate with individuals that display the appropriate mating ritual. Which type of reproductive isolation mechanism does this scenario describe?
*Behavioral Isolation

4. Human-created climate change is caused by
*increased carbon dioxide in the air.

5. Imagine the environment of an ecosystem changes such that it floods more often. Which species would most likely increase in numbers in this new environment?
*a tree species that is tolerant of excess water

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