A stereo pair of air photos is particularly useful in studying ________ landscape features.
A) topographic
B) plant stress induced
C) human-made
D) salt-affected
E) parent material
Question 2
To constitute a soil association, a group of soils must all:
A) be found together in the landscape.
B) be classed in the same soil order.
C) have the same soil series name.
D) have the same surface horizon texture and be in the same slope class.
E) all of the above