The b horizon is

a. rockier than the c horizon
c. less nutrient rich than the a horizon
b. richer in humus than the a horizon
d. thicker than the c horizon

less nutrient rich than the A horizon

Explanation:

B horizon is the layer of the soil present below the uppermost horizon (the A horizon). B horizon is characterized by the presence of lesser amount of humus as compared to the humus present in A horizon. The lesser humus content in B horizon makes it less nutrient-rich compared to the A horizon. B horizon is a hard and compact soil layer.

i'm sorry, but can you list the answers? i cannot with something i don't know the answers to

,

chris

answer; ///(b) it is composed of four protein chains and four heme groups;