2. Try segregating the things
around you as pure substances
or mixtures.​

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

your answer would be a. 12.5 kg

answer: c.

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