If a septic system is to be used for sewage disposal,
A. the surrounding soil must be impermeable to contain the wastes.
B. in normal operation, all potential pollutants will be decomposed.
C. the soil should be unsaturated, containing sufficient air (oxygen) to permit aerobic breakdown of wastes.
D. high population density is required for efficient operation.
Answer: C
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ocean wisely. a. True b. False
Coastlines have not come into equilibrium with modern sea levels
Indicate whether the statement is true or false
Why does the adiabatic rate of cooling change when condensation begins?
What will be an ideal response?
What is the process behind tidal energy?
A. electricity generated by the rise and fall of tides B. waves rushing back and forth as a result of tides C. the back and forth movement of the daily tidal cycle D. the difference between high and low tides