What is the main frame of reference for GPS measurements?
A) rock compositions
B) satellite locations
C) Earth's magnetic pole
D) the absolute value of Earth's core
Answer: B
Environmental & Atmospheric Sciences
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List the following compounds in order of increasing boiling point: Cl4, CBr4, CCl4, CF4.
A. Cl4, CBr4, CCl4, CF4 B. Cl4, CCl4, CBr4, CF4 C. CF4, CCl4, CBr4, Cl4 D. CF4, CBr4, CCl4, Cl4
Environmental & Atmospheric Sciences
Despite a massive reduction in the poverty rate, upwards of how many Chinese still live on less than $1.25 a day?
A) 200,000 B) 200 million C) 2 billion D) 2 million E) 20 million
Environmental & Atmospheric Sciences
The zone that has no light is called the ________ zone
A) aphotic B) disphotic C) euphotic D) hyperphotic E) hypophotic
Environmental & Atmospheric Sciences
When was the eruption of Mount Tambora in Indonesia?
A) 2015 B) 1915 C) 1815 D) 1715 E) none of the above
Environmental & Atmospheric Sciences