What makes up the greatest biomass of any species on Earth?
a. King crab
b. Krill
c. Squid
d. Coral
ANS: B
Krill is a planktonic arthropod. It is eaten by an incredibly diverse selection of organism, including
very large whales. Information can be found in the section Advanced Invertebrates Have Complex
Bodies and Internal Systems.
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A gradient of 0.037 implies that
A) the slope will drop by 37 meters or feet or inches for every 1000 meters or feet or inches of horizontal distance. B) there are 0.037 times as many index contours as there are other contours on the map. C) the slope is steeper than another location with a gradient of 0.040. D) topographic map or shaded-relief map cannot be constructed for the area because the gradient is too small.
List the two techniques that are most commonly used to mine coal: ___________ and
_________. Fill in the blank(s) with the appropriate word(s).
Suspicious that their household drinking water from a well was somehow being contaminated with gasoline, a family living in a farmhouse investigated possible sources of groundwater contamination Sure enough, the underground storage tanks for gasoline at a nearby filling station were leaking. Promising to pay to fix the problem, the station owners sealed the gas tank and pumped out the contaminated groundwater. After several months of rain, the groundwater supplies were restored and the water in the well was safe to drink. This situation illustrated an example of
A) reverse osmosis refinement. B) maximum containment remuneration. C) groundwater remediation. D) well-water containment.
________________ humidity is expressed as a percentage
Fill in the blank(s) with correct word