What happens when fresh water in an aquifer comes in contact with salt water?
A. The fresh water sinks because it is usually more dense than salt water.
B. The fresh water sinks because it is usually less dense than salt water.
C. The fresh water floats because it is usually more dense than salt water.
D. The fresh water floats because it is usually less dense than salt water.
Answer: D
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Foliated metamorphic rocks are composed largely of equidimensional grains of minerals such as quartz and calcite.
a. true b. false
The composition of soil is best described as
A) approximately 45% organic matter, 50% mineral matter, and 5% water and air. B) roughly 45% mineral matter, 5% organic matter, and 50% air and water. C) pebbles, gravel, cobbles, and a varying combination of sands, silts, and clays. D) the very thin surface layer rich in organic matter with some other mineral matter in the mix. E) primarily mineral matter (approximately 72%), but also consists of organic matter (10%), and water (18%).
During the mid-nineteenth century, the U.S. steel industry concentrated around ________ in an area proximate to iron-ore and coal mines
A) Chicago B) Boston C) Pittsburgh D) Cleveland E) Buffalo
Tsunamis can cause damage thousands of miles from their source
Indicate whether the statement is true or false