an insecticide is anything that kills insects. if said insect is a crop damaging pest then killing it will help the farmer gain a better crop
kill them by spraying insect killer or deoderant on them, or buy a swatter.
Insect population is larger.
I think the answer is that you have to find which stage it helps for the controlling of insects. I don't think the answer is right because I am only 5.
Chemicals used by farmers to kill insect pests are called pesticides.
lady bugs
insect eat a leaf
Chanel No. 5
because the insect need to eat
When the number of damaging insects has reached a level where further crop loss is greater than the costs and disadvantages of spraying. Typically this level is reached only when the insect pressure is so great as to overwhelm the methods already suggested by the use of Integrated Pest Management.
an increase in the spider population
Bacillus thuringiensis. It allows the plants to produce a natural insect repellnt.
They control the insect population