Humus is a type of (1) fossil seen on the rocks (2) decaying organic matters in soil (3) fertilizers applied in soil (4) special growth found in plants Answer : decaying organic matters in soil...
The surface of a "desert pavement" is composed mainly of which of the following? w) loose sand x) sand and clay y) pebbles and boulders z) concrete and cement Answer : ANSWER: Y -- PEBBLES AND BOULDERS...
The B-horizon of a pedalfer soil is noted for its accumulation of: w) carbonate x) nitrogen y) humus z) oxides Answer : ANSWER: Z -- OXIDES...
The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite Answer : ANSWER: W -- QUARTZ...
Which one of the following is an example of chemical weathering? w) the splitting of a boulder x) the grinding of pebbles into sand y) the cleavage of a feldspar crystal z) the rusting of hornblende Answer : ANSWER: Z -- THE RUSTING OF HORNBLENDE...
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