If a rock is poorly sorted, this means the rock contains
A. some parts that are reddish and others that are not.
B. a great variety of rock types as clasts.
C. mostly sand.
D. a wide range in the size of clasts.
E. some angular and some rounded clasts.
Answer: D
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The term "ecological footprint" can best be described as the ____.
A. average size of the lot on which a family home is built B. number of acres necessary to grow enough food to support a family C. geographic area in which a person travels during the course of their average daily activities D. amount of land and water needed to supply a population or an area with renewable resources and to absorb and recycle the wastes and pollution produced by such resource use E. amount of tillable agricultural land necessary to supply the food requirements of a nation
A number of lakes in North America no longer have fish in them. One reason for this is:
A) carbon monoxide dissolves in the water and makes it toxic. B) the hole in the ozone layer has allowed too much UV to penetrate the water. C) acid rain has made the water more acidic, causing it dissolve toxic aluminum from the soil. D) acid rain falling directly onto fish kills them instantly.
If specific gravities were defined by reference to oil (density = 0.89 g/mL) rather than water (density = 1.0 g/mL) which of the following would be true?
A) The specific densities of all materials would be larger than those given in tables in handbooks. B) The specific densities of all materials would be smaller than those given in tables in handbooks. C) The specific densities of some objects would be larger and of other objects would be smaller than those given in tables in handbooks. D) The question is meaningless since water is the only permissible reference material.
Because of immigration, the U.S. is the only MDC in the world experiencing significant population growth
a. True b. False Indicate whether the statement is true or false