Which of the following is the most useful for analysis by environmental scientists of the impact of humans?
A) A farmhouse, plowed fields, and a stand of old growth forest nearby
B) A stadium packed with 50,000 people there to watch a football game
C) A remote region in Yellowstone National Park with restricted access
D) The student center building of a large university, busy with students at lunchtime
A
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Evaluate which colonial style of governance was most devastating to Africa
What will be an ideal response?
The segment of the atmosphere in which gases maintain an approximately uniform composition is the ________
A) homosphere B) exosphere C) ionosphere D) stratosphere E) troposphere
How many different kinds of minerals have been identified by earth scientists?
A. Hundreds B. Between 10 and 100 C. Thousands D. Less than 10
A pheromone is a ________
A) strong herbicide B) species-specific chemical attractant C) chemical that travels in the bloodstream and controls an organism's growth and development D) predator used to manage a pest naturally E) new form of chemical insecticide waiting FDA approval