A worm that burrows into sediments below the sediment-water interface is a part of the epifauna. Indicate whether the statement is true or false
F
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Why is slash-and-burn agriculture so ecologically damaging? a. Fires frequently spread to much larger areas than intended
b. Areas are repeatedly burned before they can grow back. c. Ash prevents new plants from growing. d. Crops can only be grown for a few years before a new area must be burned. e. Exposed soil soaks up rainfall, decreasing the amount available for surrounding trees.
The catabolism of carbohydrates or lipids produces smaller species which then enter the citric acid cycle. How many carbon atoms are in these smaller species?
A) 1 B) 2 C) 3 D) 4
The deepest portion of the lithosphere is formed from ________.
A. the Moho B. a combination of basalt and granite C. terrestrial granite D. oceanic basalt E. mantle material
The Fergana Valley of Central Asia is home to some of the most convoluted geopolitical boundaries in the world. Which three nations own various parts of the Fergana Valley?
A) Tajikistan, Turkmenistan and Afghanistan
B) Tajikistan, Uzbekistan and Kyrgyzstan
C) Kazakhstan, Uzbekistan and Kyrgyzstan
D) Russia, China and Kyrgyzstan
E) Afghanistan, Uzbekistan and Kyrgyzstan