How many times did the Earth's magnetic field switch from north to south in the last 10 million years?
A. never
B. seldom-less than 5 times
C. many-more than 20 times
Answer: C
Environmental & Atmospheric Sciences
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Which of the following is not a characteristic of a mineral?
A) Naturally occurring B) Organic C) Solid D) Ordered internal structure E) Relatively consistent chemical composition
Environmental & Atmospheric Sciences
The types of material involved in mass movements include:
a. mud b. regolith c. rock d. snow and ice e. all of the above
Environmental & Atmospheric Sciences
By definition, beaches are composed of sand
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which of the following contains a prosthetic group?
A) collagen B) hemoglobin C) insulin D) none of these
Environmental & Atmospheric Sciences