Question

tell 2 harmful effects of pest​

Answer 1

Here are some of the damaging effects of pests.

Disease

Fleas, cockroaches, mosquitos and rats are all common carriers for disease, as are many other insects and rodents.


Allergies and Venom

Another problem area is allergens. Pests can carry allergens into the home. Their feces can also cause allergic reactions and their shedding skin can pollute your indoor air. 

House Damage

Insects can also cause structural damage to your home. If you have any wood structure in your home that is not treated for insects and these pests take over, you'll quickly find yourself paying high costs for repairs.



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Answer 2

Hey mate here is your answer,

Pests also destroy the habitat of other organisms as well as natural resources, leading to reduction in water quality, increase in soil erosion and degradation of land, and destruction of native plants that provide food and shelter to native species or those endemic to the place..

Hope it helps.