Organic matter is a natural component of soil and is not typically considered a contaminant.

Soil contamination can reduce the number of soil organisms by creating a toxic environment or by altering the physical and chemical properties of the soil.

Erosion control is not directly related to soil biodiversity, but rather to the physical properties of the soil and the presence of vegetation.

Remediation is a general term for the process of removing contaminants from soil, and can include bioremediation, phytoremediation, and other techniques.

Landfilling is not a remediation strategy, but rather a method of disposal for contaminated soil.

Soil contamination can reduce plant growth by affecting the availability of nutrients and water, and by creating a toxic environment for plant roots.

Climate is not a direct factor that affects the severity of soil contamination, although it can influence the rate of contaminant degradation.

Phytoaccumulation is the process by which plants absorb and accumulate contaminants from the soil, without necessarily degrading or transforming them.

Soil biodiversity generally increases the resilience of soil to contamination, rather than making it more susceptible.

Bioremediation is the process by which microorganisms break down and transform contaminants in the soil, using them as a food source or energy source.

Visual inspection is not a reliable method for assessing soil contamination, as contaminants are often not visible to the naked eye.

Soil contamination can reduce the availability of nutrients to plants by binding them to soil particles or by altering the soil pH.

Soil contamination generally reduces soil biodiversity, rather than increasing it.

Phytoextraction is the process by which plants remove contaminants from the soil and store them in their tissues, without necessarily degrading or transforming them.

Land use is not a direct factor that affects the rate of soil contamination, although it can influence the types of contaminants that are present.