Final answer:
The amount of oxygen in soil is affected by the number of decomposers, the depth of the soil, and the compaction of the soil.
Step-by-step explanation:
The amount of oxygen in soil is influenced by several factors, including the number of decomposers, the depth of the soil, and the compaction of the soil. Decomposers, such as bacteria and fungi, consume oxygen during the process of decomposing organic matter. As the number of decomposers increases, more oxygen is consumed, leading to lower levels of oxygen in the soil. Additionally, the depth of the soil can affect oxygen availability, as deeper soils may have lower levels of oxygen compared to shallow soils.
Furthermore, compaction of the soil can also impact oxygen levels. Compacted soil has reduced pore space, which restricts the movement of oxygen into the soil. This can result in lower oxygen levels in the soil. Therefore, both the number of decomposers and compaction of the soil can influence the amount of oxygen in soil.