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.
Incorporating organic matter into soil can have several impacts because it disturbs the physical, chemical and biological balances in the soil. It can: 1  change the amount of nitrogen that is available to plants. 2  change the amount of other nutrients available. 3  change the way the soil sticks together (soil aggregation).