How do point and non-point sources differ? Give one example of each.
What will be an ideal response?
Point sources discharge at a specific location. Examples are pipes, ditches, sewer lines, and discharges from factories and mines.
Non-point sources are more diffuse and consist of runoff from land. They are harder to control, identify, and clean. Non-point sources include parking lots, golf courses, yards, streets, farmland, etc.
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Which two nations in the region have a very low HDI, with low life expectancies and high infant mortality rates?
A) Algeria and Morocco
B) Sudan and Yemen
C) Turkey and Iran
D) Saudi Arabia and Oman
E) Israel and Jordan
Mercantile colonialism required huge migrations of people to extract the Earth's resources, including 30 million slaves and contracted workers from Africa, India, and China to work mines and plantations around the globe
a. True b. False Indicate whether the statement is true or false
Which of the following is true about the Ogallala aquifer?
A. It is a confined aquifer so is replenished as fast as water is used. B. Water levels are dropping primarily because of overpumping. C. It was featured in the movie A Civil Action. D. None of these.
In 1987, 36 nations meeting in Montreal, Canada, developed the Montreal Protocol to reduce production of
a. carbon dioxide b. nitrous oxide c. CFCs d. toxic wastes e. halons