Answer:
a. government interference that lowered crop values
<span>The answer is True. A soil horizon is a cross-section of the physical layers that make up the soil. The soil horizons include such features as the organic layer, surface layer, subsoil, substratum and bedrock. Each horizon is unique and different depending on the land it is found on.</span>
<span>B. an economic union of separate states with a common currency and freedom of movement</span>