Question

Match the following chemical with their uses.

• A. Provide nutrients
• B. Eliminate weeds
• C. Kill insects

Answer 1

$\bullet$ Insecticides are chemical substances sprayed on crops to prevent them from disease-causing microorganisms and pests, such as insects or rodents.

$\bullet$ Weedicides are chemicals that are used to eliminate weeds, i.e., unwanted plants that compete for space and nutrients with the crops.

$\bullet$ Fertilisers are chemicals added to the soil to replenish nutrients so that the yield can be increased.