Which of the following is not correct regarding nitrogen
A) The atmosphere contains about 78% nitrogen.
B) Bacterial action is key to the nitrogen cycle.
C) Atmospheric nitrogen is accessible directly to most organisms.
D) Nitrogen is very important to organisms.
C
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Standard sea level atmospheric pressure in the U.S. is approximately 29.92 inches of mercury
Indicate whether the statement is true or false
Less than 20 percent of Earth's magma extruded through volcanism occurs at oceanic spreading centers.
Answer the following statement true (T) or false (F)
Terrigenous sediment is another name for which of the following?
A) Biogenous Sediment B) Cosmogenous Sediment C) Hydrogenous Sediment D) Lithogenous Sediment
Ecologists study interactions within and among which five levels of organization?
a. cell, organism, atom, ecosystem, and molecule b. atom, molecule, cell, organism, and population c. molecule, cell, atom, community, and biosphere d. organism, population, community, ecosystem, and biosphere e. atom, organism, cell, biosphere, and population