The maximum sustainable yield, the maximum amount of each type of fish, crustaceans, and mollusks that can be caught without impairing future populations, probably lies between ________ metric tons
a. 15 and 20 million
b. 100 and 135 million
c. 20 and 30 million
d. 100 and 150 billion
b
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Vast outpourings of lava covering many thousands of square kilometers in multiple flows are called ___
a) pillow basalts b) flood basalts c) rift basalts d) sheet basalts e) regional basalts
Which of the following is not factored when considering discharge?
A) channel length B) channel width C) channel depth D) velocity
Discuss the changes that occur in the Earth's orbit and the orientation of the Earth in its orbit. Over what time scales do these different changes occur?
What will be an ideal response?
What is an important result of divergent plates?
A) They spread, resulting in the formation of new seafloor along lines of submarine volcanoes. B) Plate subduction occurs, resulting in less seafloor. C) Plates slide past each other, resulting in violent earthquakes. D) They often cause tsunamis.