What is luster?

a. a mineral's ability to transmit light through itself

b. the color of a mineral in powdered form

c. an indication that a mineral has double refraction

d. the quality of light reflected from a mineral's surface

e. the color of a mineral


d. the quality of light reflected from a mineral's surface

Environmental & Atmospheric Sciences

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The international illegal trade in wildlife brings in an average of

a. $600,000 per year b. $600,000 per hour c. $1.1 million per year d. $500,000 per hour e. $100 million per year

Environmental & Atmospheric Sciences

Which of the following best defines boiling point?

A) The temperature at which a solid changes to a gas B) The temperature at which a liquid changes to a gas C) The temperature at which a liquid changes to a solid D) The temperature at which a solid changes to a liquid

Environmental & Atmospheric Sciences

Tidal bores mostly occur on a(n) _______ .

a elliptical diurnal tide b flood tide c neap tide d boring semidiurnal tide e

Environmental & Atmospheric Sciences

Historically, ________ of the world's population has always lived in ________, at least since the beginning of written history.

A. A small percentage; rural communities B. The vast majority; rural communities C. At least half; rural communities D. At least half; urban areas E. The vast majority; urban areas

Environmental & Atmospheric Sciences