The federal law that first banned the dumping or discharge of wastes into any body of navigable water in the United States was the
A. Water Quality Improvement Act of 1970.
B. Refuse Act of 1899.
C. Federal Water Pollution Control Act of 1956.
D. National Environmental Policy Act of 1969.
Answer: B
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How long is this esker, in miles? (Use a string placed along the esker, then pull it straight and compare it to the scale.)
A sinuously curving, narrow ridge of coarse sand and gravel is called an esker. Eskers form along the channel of a meltwater stream that flows beneath a glacier, in an ice tunnel, or between ice walls beneath the glacier. As a glacier retreats, the steep-sided esker is left behind in a pattern roughly parallel to the path of the glacier.
Biomagnification is an especially important process in the concentration of ________ to toxic levels
Fill in the blank(s) with correct word
What percentage of expensive bottled water is actually bottled tap water?
A. 5% B. 10% C. 20% D. 30% E. more than 40%
Passive solar technology features are usually more economical to design and build initially into new structures than incorporating them into homes that already exist.
Answer the following statement true (T) or false (F)