How are hot spots used for determining the absolute motions of plates? What will be an ideal response?
Hot spots appear to be fixed in the mantle relative to each other, so they can be used as a reference
frame. If the age of a basalt and its distance from the hot spot is determined, then the rate of movement
of that rock can be calculated. If a number of these samples are taken from various distances from the
hot spot, the calculation can be quite accurate.
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The estimated proven reserves under Alaska's North slope would meet current world demand for oil for about ____________months or U.S. demand for less than ____________years
Fill in the blanks with correct word
Which of the following is not considered biota?
A) animals B) bacteria C) fungi D) plants E) water
Describe the sixth mass extinction event and its specific causes
What will be an ideal response?
Most fire deaths in the United States occur in hotels and motels.
Answer the following statement true (T) or false (F)