The North American continent falls within the biogeographic ________ realm.
A) Nearctic
B) Palearctic
C) Ethiopian
D) Neotropical
Answer: A) Nearctic
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A gradient of .037 implies that
A. the slope is steeper than another location with a gradient of .040. B. there are .037 times as many index contours as there are other contours on the map. C. topographic map or shaded-relief map cannot be constructed for the area because the gradient is too small. D. the slope will drop by 37 meters or feet or inches for every 1000 meters or feet or inches of horizontal distance.
How do worms help plants grow?
A. They carry out chemical reactions that convert carbon dioxide to nitrogen. B. They add excrement, a source of nutrients, plus they produce air space by crawling through the soil. C. They are a source of minerals. D. They decompose organic material into compounds plants can use.
Which of these aquatic organisms can form chemical sediments?
A) Corals B) Coccolithophores C) Bacteria and corals D) Bivalves, corals, bacteria, and coccolithophores
True or False: A genetic classification scheme requires observation and interpretation of those observations
Indicate whether this statement is true or false.