How many liters of ethanol contain 1.9 kg of alcohol

it should be all of them because it asks if you included all of those in your answer

explanation:

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

dynamic equilibrium is the answer.