Currently, the fastest rate of seafloor spreading is thought to be on the order of ________
A) 0 centimeters per year (stopped)
B) 10 centimeters per year
C) 10 meters per year
D) 100 meters per year
E) 1 kilometer per year
Answer: B
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Which Library of Alexandria librarian was responsible for the early development of the longitude and latitude system?
a. Hipparchus b. Claudius Ptolemy c. Hypatia d. Eratosthenes e. Pythagoreas
In addition to designation of horizons, soil scientists also designate subhorizons, for instance, indicating human activity or presence of organic matter
Indicate whether the statement is true or false
What is the importance of monitoring volcanic activity? Why should we pay attention to what volcanoes are doing?
What will be an ideal response?
During the positive (warm) phase of the ____________________, higher pressures to the south and lower pressures across the Arctic produce strong westerly winds aloft. These winds wrap around the semipermanent zone of upper-level low pressure over the North Pole that is sometimes referred to as the ____________________
Fill in the blank with correct word.