What distinguishes a mineral reserve from a mineral resource?
A. Politics
B. Economic feasibility
C. Existing technology
D. Location
Answer: B
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Ediacaran faunal fossils are rare because they ____
a. existed for a short time b. lived in a narrow geographic range c. were soft-bodied animals d. are the oldest animal fossils e. were oxidized in the Great Oxygenation event
The largest known aquifer system in North America is the High Plains Aquifer (Ogallala Aquifer)
Indicate whether the statement is true or false
________ magma is the most abundant type of magma erupted on Earth
A) Basaltic B) Andesitic C) Granitic D) Pegmatitic
Which of the following is NOT a part of the process of natural selection?
a. Organisms struggle to survive. b. Organisms limit the number of young they produce. c. Individuals vary in their genetic characteristics. d. Some individuals are better suited to their environment than others.