The step of the copper production process that involves the crushing and grinding of particles is
A) concentration.
B) refining.
C) mining.
D) smelting.
E) transportation.
Answer: A
You might also like to view...
Midocean ridges are higher than surrounding oceanic crust primarily because
A) two plates are colliding. B) the crust is thicker and stronger. C) transform faulting uplifts the rocks. D) the lithosphere is thinner and hotter.
What areas of the United States attract the largest number of musicians?
A) Austin, New York B) Austin, Los Angeles C) New York, Los Angeles D) Nashville, Los Angeles E) Nashville, Austin
Designing buildings to maximize absorption of sunlight during winter and to keep the interiors cool during summer is referred to as ________
A) wind energy collection B) geothermal energy collection C) nuclear energy collection D) passive solar energy collection E) active solar energy collection
Which of the following is an example of a relative date?
A) The Cenozoic era began sixty-five million years ago. B) A headstone in a cemetery has the date a person died. C) The Declaration of Independence was written in 1776. D) The Silurian period came before the Devonian period.