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.
Another effect of the use of chemical fertilizers also reduce and suppress populations of soil microorganisms that are beneficial to the soil that are beneficial to plants. â¢ Not all fertilizers can be absorbed by plants (Anonymous, 2010). Soil pollution also can have an impact on ecosystems.