Arteries are far from the skins surface while veins are close to the surface. Which word describes arteries? Is “deep” the correct directional term?

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

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Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?