Photosynthetic and chemosynthetic organisms can be called either primary producers or heterotrophs because they
make their own food.
a. True
b. False
False
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What is perestroika?
A) greater openness, a policy in the 1980s that encouraged several republics to demand independence B) planned economic restructuring, an early move toward a freer market C) a policy of education improvement, in the last days of the former Soviet Union D) the Russian word for railroad E) a type of permafrost found around Glasgow
Which of the following is true of the axial positions in cyclohexane?
A) Each carbon atom of the ring has two groups bonded to it in axial positions. B) Each carbon atom of the ring has one group bonded to it in an axial position. C) The axial positions are all on the same side of the ring. D) The axial and equatorial positions on each carbon atom are on the same side of the ring.
Wetlands perform a major ecosystem service of trapping and filtering water as it passes through the wetland area.
Answer the following statement true (T) or false (F)
An aqueous-phase leachate plume will always move in the direction of:
a. decreasing hydraulic gradient b. increasing hydraulic gradient c. decreasing hydraulic conductivity d. increasing hydraulic conductivity