Which one of the following best illustrates an ecological landscape?
A) A pond and all of the living organisms within it
B) The animals, plants, and bacteria living in the Mississippi River
C) A large open prairie with bison grazing on grasses and insects visiting the flowers
D) A river flowing past fields and forests in Yellowstone National Park
D
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The latest information tells us that salvage logging ________
A) eliminates wildfires from forests B) causes increased soil erosion C) tends to provide additional food and habitat for many types of wildlife D) has no effect on the severity of wildfires E) decreases long-term timber yield by more than 60%
45°F is equal to ________ K
A) 318 B) -228 C) 280.2 D) 140
Recent work has shown that the last major earthquake in the Cascadia subduction zone occurred about 9 p.m. on 26 January 1700 and was about magnitude 9. This is known by ________.
A. analysis of annual growth rings in trees of downed forests along the Oregon-Washington-British Columbia coast showing large rings after 1699 B. Tsunami of 2-m (7-ft) height that hit Japan from midnight to dawn pointing to a 9 p.m. earthquake along the Washington-Oregon coast on 8 December 1699 C. Jesuit missionaries in the Chile and Alaska areas recording a very large quake and accompanying tsunami in their daily logs D. analysis of annual growth rings in trees of downed forests along the Oregon-Washington-British Columbia coast showing no rings after 1699 and Tsunami of 2-m (7-ft) height that hit Japan from midnight to dawn pointing to a 9 p.m. earthquake along the Washington-Oregon coast on 26 January 1700. E. Tsunami gauge measurements at the Pacific Tsunami Center
Mercury is known to biomagnify in food chains, in the same manner as DDT. Based on your knowledge of biomagnification of DDT, which organism would you expect to contain the most mercury in a contaminated lake?
A) algae and plants B) large fish C) small fish D) fish-eating birds E) aquatic insects