Q4 of 465 Page 45

Pesticides are ... chemicals.

toxic

Pesticides are the only toxic substances released intentionally into our environment to kill living things. This includes substances that kill weeds (herbicides), insects (insecticides), fungus (fungicides), rodents (rodenticides), and others.


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2

Blast is a …….disease of paddy.

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Chemicals used to kill weeds are called …

 5

... .are plants that grow in places where they are not wanted.

 6

...... is a method of control of pest or weed in which one living organism is used to control another living organism is used to control another living organisms.