The top layer of the soil in the diagram is composed MAINLY of A)
sand and clay.
B)
solid bedrock
C)
many types of minerals.
D)
decaying organic material.

?

(there is no diagram)

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.