Waxes belong to which class of compounds?

A) alcohols
B) carboxylic acids
C) esters
D) ethers


C

Environmental & Atmospheric Sciences

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The fact that one side of the Moon always faces Earth is evidence that while revolving about the Earth, it

A) does not rotate about its axis. B) rotates about its axis.

Environmental & Atmospheric Sciences

Suppose an isotope has a half-life of 50 million years, and 1/8 of the sample remaining consists of that isotope. What is the age of the rock from which it was taken?

A)150 million years B)300 million years C)400 million years D)600 million years E)800 million years

Environmental & Atmospheric Sciences

Relative to the celestial background, the moon moves ________

A) south to north B) west to east C) east to west D) southeast to northwest

Environmental & Atmospheric Sciences

The Srivijaya state flourished on what is today:

A) Laos B) Thailand C) Burma D) Cambodia E) Sumatra

Environmental & Atmospheric Sciences