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.
Soil pollution involves the contamination of soil by the release of harmful substances into the soil. Unlike air pollution, which has a direct affect on human lives, soil pollution causes an indirect damage to humans and other animals. The lives of all the living things depend on three sources: water, light and soil.