Time that has passed since the origin of earth is known as
a. time
b. relative age
c. geologic time
d. absolute time
user:
which of the following is part of a rock formation that consists more or less of the same type of rock material?
a. bed
b. fossil
c. event
d. stratum

Ahis which describe the horizons in a soil profile? check all that apply. horizon a is mineral deficient. bedrock lies below the soil layers. te horizon o forms from organic material, horizon b undergoes the least amount of change. horizon c is least affected by the soil formation process.