Yes, it is true that suspended matter that floats in the air, such as ash, soot, mold, spores ane road dust, is known as particulates.
Particulate can be defined as a particle which is extremely small in size and his suspended in the atmosphere.
The particles of dust, ash, soot, mold, spore and road dust are some of the particle which are very small in size and comes into the category of particulate.
This particulate matters adds up to the air pollution of the atmosphere.
This is why we can conclude that the statement given to us is completely true.
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