Oxygen sag curves can occur when ____.
A. water levels are high
B. bacteria break down biodegradable wastes
C. water flows quickly
D. water is cool or cold
E. salt and fresh water mix
Answer: B
You might also like to view...
Juliet Schor’s suggestion of limiting work hours through the 80 percent solution is an example of which view of capitalism?
a) Time banks b) Sustainable decrease economics c) Dematerialization d) Industrial ecology
Which of the following industries is most similar to a natural ecosystem service?
A) Pest control B) Telecommunications C) Urban public transportation systems D) The postal system
Which of the following is true of radiation?
a. It is a form of energy that is transmitted as waves. b. It cannot be seen by humans at all. c. It only occurs in a shortwave form. d. It only occurs in longwave form.
Compared to sandstorms, dust storms ____
a. involve gravel-sized sediment b. are moved by running water c. carry lighter particles d. carry sediment closer to the ground