The solid, inorganic portion of the Earth system is known as the ______.
a. Earth
b. Lithosphere
c. Hydrospehere
d. Atmosphere
e.biosphere
b. Lithosphere
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Which fish species has been reduced by huge marine trawling operations?
Atlantic cod Beluga whales Walleye Sea trout
Compare and contrast the concepts of slab-pull and ridge-push. How might mantle plumes influence plate movement? What will be an ideal response?
An active volcano is defined as one that
A) exhibits activity indicative of an imminent eruption. B) has erupted at least once within recorded history C) has erupted at least once within the past century. D) has erupted at least once within the past decade.
In the movie "Volcano" basaltic lava flows are shown running down flat streets at speeds faster than humans could run. From your knowledge of magma viscosity, is this realistic?
A) There is no way of knowing because basaltic magmas can have viscosities similar to water or higher depending on temperature and fluids, and thus there isn't enough information. B) No, the viscosity of basaltic magma is much higher than water, and thus, would flow much faster than water. C) Yes, the viscosity of basalt magma is similar to water so it would flow at comparable rates. D) No, the viscosity of basaltic magma is much higher than water, and thus, would flow much slower than water.