Video Transcript. Hi everyone, Kevin Smith, TubaLove here, talking about different types of tubas. And when I say type, I'm talking specifically about the different types of keys that are available. This happens to be what's called a C tuba. They're also B flat tubas, and E flat, as well as F tubas.
Soil quality decline is one of the main causes of land degradation and is considered to be responsible for 84% of the ever diminishing acreage. Year after year, huge acres of land lost due to soil erosion, contamination and pollution.
The harmful effects of soil pollution may come from direct contact with polluted soil or from contact with other resources, such as water or food which has been grown on or come in direct contact with the polluted soil.