SI unit of Density

Don't copy a para from Góógle tell me single word​

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg