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Which of the following examples can cause gene flow between populations? a. an increase in predators to a population of zebra b. a volcanic eruption that kills half of a population of mice c. bird droppings that contain seeds from a different location d. a person that sprays a toxin on a group of mosquitoes

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

In the water cycle , when does water undergo a chemical change