The percentage of the Earth's surface that is covered by water is about:a
10%.
b. 30%.
c. 50%.
d. 70%.
e. 100%.
D
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Relative humidity tells us: a. how close the air is to being saturated
b. whether it is raining. c. how much water vapor is in the air. d. the dew point temperature.
A(n) ____ thermometer consists of two different pieces of metal (usually brass and iron) welded together to form a single strip
a. thermograph b. bilateral c. electrical d. thermoresistant e. bimetallic
The fact that older fossils are more unlike living organisms implies that old forms of life died out and that new forms of life have developed is known as ________.
A. law of superposition B. law of faunal succession C. law of original horizontality D. law of inclusions
The iron content in oceanic rock allows geologists to determine its age. What term describes this approach and other findings?
A. sea floor spreading B. paleontology C. oxygen-isotope analysis D. paleomagnetism E. continental drift