unit 4 frq

Describe the collision of two tectonic plate boundaries on a subduction zone.

When two tectonic plates collide on a subduction zone, they form a convergent boundary. One plate is pushed below the other. 

identify a specific biotic component within the A horizon

One biotic component within the A horizon is earthworms.

identify a abiotic component within the A horizon

An abiotic component within the A horizon is sand.

describe how humus originated in the soil and identify two ways for how humid improves the soil conditions

Humus originates in soil as a result of the decomposition of plant and animal matter. Humus improves the soil conditions by supplying plenty of nutrients that improve the soil, such as nitrogen. It also increases the water capacity in soil, allowing for it to have enough moisture.

describe one way to remediate soil affected by acid deposition

Adding crushed limestone is one way to remediate soil affected by acid deposition.

make a claim about the relative nutrient levels in sandy soil compared to clay soil

Nutrient levels in sandy soil are relatively lower compared to clay soils because clay particles are much smaller than sand particles and therefore have more surface area to hold nutrients.