An igneous rock that can be expected to contain large (>1 mm diameter) visible grains of quartz is:
a) Gabbro
b) Granite
c) Basalt
d) Peridotite
e) Andesite
Ans: b) Granite
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The point of origin of an earthquake at depth is called _____.
a.) a foreshock b.) the epicenter c.) the focus d.) an aftershock e.) the fixed point
The concept of biological fitness is based on two separate abilities. These are the ability to
A) survive all environmental resistance factors and reproduce. B) find a mate and have offspring. C) defend against enemies and find food. D) produce and defend a family.
Which of the following is considered a cultural hazard?
A. smoking cigarettes B. contagious viruses C. unsafe sex D. earthquakes E. unsafe working conditions
As seawater evaporates, the remaining water has ________ salinity and ________ density
a. lower; lower b. higher; higher c. higher; lower d. lower; higher