D.level c: normal work clothes or tyvek coveralls used with an air-purifying respirator.
Coal was important to other industries, because in the beginning there were large amounts of coal, which led to technologies being built around using coal as the fuel. As more and more technology was built around the coal, coal became an important resource, and, those technology led to greater production of other experiments and inventions.
hope this helps
Generally unfavorable weather conditions are associated with a low pressure area. In a low pressure area, the atmospheric pressure is low compared to the pressure of nearby areas, and the air tends to be unstable.
I think it’s clumped distribution
This could be one of two things, I need a bit more information, but perhaps you can decide.
Drip irrigation otherwise called trickle irrigation delivers water using tubes and emitters to the base of the plant. Subsurface irrigation uses a combination of tubes and emitters and is buried under ground. Good luck
