Plants do need nutrients beyond H2O, CO2, and sunlight ... mostly various minerals and "fixed nitrogen" ... that means nitrogen compounds rather than nitrogen gas.
Fertilizer is an attempt to supply those needs faster than nature would do it on her own.
nitrogen
peat
fertiliser
manure.
Nitrogen is a fertiliser that encourages green growth, but, as it also encourages soft growth it is better used in a balanced fertiliser.
Yes, though often in the form of Ammonia.
If hydrogen was stored onsite at the West Fertiliser factory then that is what the explosion was caused by after the initial fire which led to the hydrogen escape.
Several different ones. Calcite is used as a fertiliser under the name "lime". Various sulphate and phosphate minerals are also used to make fertiliser, such as gypsum (calcium sulphate dihydrite) and fluorapatite (calcium fluorophosphate).
Fertilisers increase crop yields but cause the problem of eutrophication when they're ... However, if too much fertiliser is used it can pollute water supplies.
It's called manure.
fertiliser
commercial fertiliser is fertiliser made by a certain company.