What was one of the main causes of the Galapagos Island finches' death in 1977?
A) a tsunami
B) a drought
C) a hurricane
D) an earthquake
E) a tropical storm
Answer: B
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Organisms that break down bodies of dead plants and animals into nutrients that are released into the soil or water are called
a. Detritivores b. detritus feeders c. Decomposers d. Scavengers e. Omnivores
Looking at Figure 9.1.1, which of the following countries has the highest HDI?
A) India B) China C) Saudi Arabia D) South Africa E) Madagascar
Fully oxygenated waters contain as much as ________ ppm oxygen.
A. 12 B. 25 C. 5 D. 100 E. 2
Which of the following is not a reason why middle-class people are attracted to the U.S. inner city?
A) Houses may be larger and better constructed, yet cheaper in the inner city than in the suburbs. B) Houses may possess attractive architectural details such as ornate fireplaces and wood trim. C) Those who work downtown can enjoy their proximity to work. D) Proximity to theaters, restaurants, and other cultural and recreational facilities located downtown. E) Downtown public schools are superior, with quality instruction and high graduation rates.