What is the average rate of seafloor spreading in modern oceans?
What will be an ideal response?
5 centimeters (2 inches) per year.
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What is the formation time of the magnetic field recorded by rocks?
a. The time of observation b. The time when the original magnetic field of the Earth formed c. The time when the rock was in its original lava form d. The time when the rock formed
Earthquake and volcanic occurrences do not correlate well with crustal plate boundaries
Indicate whether the statement is true or false
What is the main tenet of the lock-and-key model for drug activity?
A. The biological lock of an enzyme can be activated by using certain chemical keys. B. The key to a drug's success is to keep it locked away from stomach acid. C. Only certain biological keys can unlock the potential of a drug. D. There is a connection between drug structure and drug shape. E. all of the above
If darker shades mean higher values, this is most likely a map of
A) wheat production. B) pastoral nomadism. C) plantation agriculture. D) rice production. E) shifting cultivation.