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.
Pesticides and pollution of the soil. ïFirst, affect soil quality. ïDecrease biodiversity in the soil because they do not just. kill the intended pest; they often kill many of the other. small organisms present. ïSoil quality deteriorates and this has a knock-on effect upon. the retention of water.