In the outline find your section on soil horizons in it you will find a diagram representing a view of a soil cut away which of the layers in this example represents the horizon that is very thin and contains large amounts of organic matter

A. O
B. A
C. B
D. C

A Layer

Explanation:

There are mainly 5 layers of soil- O, A, B, C and R. These layers are called horizons. Each layer/horizon has its own characteristics. Each layers features differentiate them from the other layers. Lets take a view at these 5 layers of soil:

O - Organic soil materials

A - Mineral; organic matter (humus) accumulation

B - Subsurface accumulation of clay (consists of different tyoes of minerals)

C - Little or no pedogenic alteration, unconsolidated earthy material, soft bedrock

R - Bedrock (strongly cemented layer of soil)

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

i think the answer is tomato juice? not entirely sure though