The ____ horizon is usually light in color and contains little organic matter
a. A horizon
b. B horizon
c. C horizon
d. D horizon
e. O horizon
ANSWER: b
You might also like to view...
Keratins are considered to be obligate heterodimers in that the dimers forming their filaments must contain one __________ and one __________ subunit?
Fill in the blank(s) with the appropriate word(s).
The investigation of the movement of proteins and lipids to their appropriate location within a cell is known as ________.
Fill in the blank(s) with the appropriate word(s).
In animals, the evolutionary development of cephalization is most associated with ____
a. bilateral symmetry b. radial symmetry c. ganglia d. nerve nets e. nerves
The processes of chemical cycling would be studied mainly by ________
A) an environmentalist B) a community ecologist C) a population ecologist D) an ecosystem ecologist