Soil taxonomy is a classification system based on
A) the processes that formed different soils
B) physical and chemical properties of the soil profile
C) divisions and subdivisions of soil texture
D) the organic matter content of the B horizon
B
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What describes the measurement of the concentration of hydrogen ions compared to the concentration of hydroxide ions in a solution?
A. ionization B. pH C. alkalinity D. covalent bonding E. isotope
Which of the following is produced by hydrolysis of methyl propanoate under basic conditions?
A) methanol and a propanoate salt B) methanol and propanoic acid C) propanol and an formate salt D) propanol and formic acid
Gas bladders help seaweeds: a. hold tight to the seafloor
b. keep their upper portions near the surface. c. photosynthesize nutrients. d. reproduce.
The best example of a state among the following is
A) an island with a long history of self-rule and a homogeneous ethnic identity, although the island has been under the control of a colonial power for the last 30 years. B) a group of islands inhabited by a homogeneous ethnicity, although the westernmost islands pertain to the territory of one country whereas the easternmost islands pertain to another country. C) a mountainous region inhabited by heterogeneous ethnicities and divided up administratively among various independent countries. D) a mountainous region inhabited by heterogeneous ethnicities which share responsibility for maintaining an independent government and a standing army. E) a mountainous region inhabited by a mixture of peoples but recently colonized by a European nation-state.