The crops are protected from pests by spraying ____ on them.
oil
water
pesticides
soil
Farmers spray pesticides on their crops to protect them from pests. Pests are organisms that damage crops.
Pesticides are the chemicals usually sprayed for killing pests on the crops. Although they kill the pests, they have a few disadvantages. Choose the correct ones.
Crops have to be stored properly to protect them from pests, moisture and micro-organisms.
If crops are stored for a long time, they have to be protected from: