Approximately how many subunits make up complex I of the electron and H+ transport chain?
A) 20
B) 40
C) 60
D) 80
B
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A ___________ is a small, cone-shaped hill usually less than 450 m (1500 ft) formed from material that accumulates from moderately explosive volcanoes.
Fill in the blank(s) with the appropriate word(s).
Phytoplankton is responsible for the synthesis of 90% to 96% of the surface ocean's carbohydrates. Indicate whether the statement is true or false
How many counties (Number of Records) in the U.S. face some risk from
hurricanes? What will be an ideal response?
What is true about loess and river valleys?
A) Loess deposits tend to be thinner and sandier close to river valleys. B) Loess deposits tend to be thinner and less sandy close to river valleys. C) Loess deposits tend to be thicker and sandier close to river valleys. D) Loess deposits tend to be thicker and less sandy close to river valleys.