Which of these describes an example of a keystone species that scientists should make efforts to protect?
A. More than 1,000 newly hatched wood frog eggs in a forest ecosystem.
B. A gopher tortoise that provides a home to more than 300 different species of animals in its burrow.
C. A nonnative population of lionfish living on a coral reef in Florida that have no natural predators.
D. A population of mistletoe plants that are parasitic because they depend on other trees and plants in the ecosystem in order to get what they need to survive.
Answers: 2
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Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?
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Which statement best describes the role of religion and culture in ancient medicine?
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Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Which of these describes an example of a keystone species that scientists should make efforts to pro...
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