What are the important factors used in defining a biogeographic realm?
What will be an ideal response?
Earth's biogeographic realms is divided geographically based on assemblages of similar flora and fauna. In particular, the biogeographic realm is determined by species distributions and their evolutionary history. This is in contrast, for instance, to the biome concept, which divides the world into large biogeographic regions based on plant communities and determined mainly by vegetation life forms and community characteristics as they relate to climate. A biogeographic realm is a geographic region in which a group of associated plant or animal species evolved. As such, there are two main delineations: zoogeographic realms and phytogeographic realms.
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What is the lithosphere's role in plate tectonics?
A) It is at the center of the earth and causes the earthquakes that move the plates. B) It is the source of the heaviest metals. C) It is the outermost layer of the earth broken into plates. D) It is the less rigid layer beneath the asthenosphere.
Joints are fractures with no movement, and usually they cannot occur in groups.
a. true b. false
____________________ act as lids on vertical air motion. When they exists near the ground, stratus clouds, fog, haze, and pollutants are all kept close to the surface
What will be an ideal response
Which of the following is the only viable explanation for the documented and observable recent climate changes, including the increased average temperature of Earth's surface?
A) Changes in the Sun's brightness B) Major volcanic eruptions C) Release of human-caused emissions D) Reversed magnetic polarity E) Variations in Earth's orbit