The O horizon is ________
A) usually more sand than silt or clay
B) composed of equal amounts of bedrock and organic material
C) primarily loam
D) primarily composed of organic materials
E) composed primarily of bedrock
D
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Evaluate Russia's current and future resources for energy production
What will be an ideal response?
Which of the following is the major source of glycerin used for industrial and commercial purposes?
A) as a byproduct in the manufacture of soaps B) a multi-step oxidation process from propene C) the one step oxidation of methanol D) none of the above
Which of the following is the H-O-H bond angle in water, H2O?
A) 109.5° B) 120.0° C) 104.5° D) 90.0°
Net photosynthesis is the total amount of carbohydrates produced by photosynthesis before respiration breaks down the carbohydrate to power the plant.
a. true b. false