Stagnated water increases the chances of malarial attack manifold. Give reasons.

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Solution

Stagnated water is the main breeding ground for the mosquitoes.

Mosquito larvae can thrive well in stagnated water.

Therefore, malaria and dengue which are transmitted by mosquitoes are the major infectious diseases which become widespread in the areas with stagnated water.

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Similar questions

Give reasons why :

(a) Waste water should not be allowed to stagnate in puddles.

(b) Waste water from a factory should not be allowed to mix with drinking water.

(d) The quantity and types of garbage generated have increased.

Assertion (A): Grains should be dried properly before storing.

Reason (R): Moisture content increases the chances of spoilage due to micro-organisms.

We should not let water stagnate near our surroundings. Give reason why?

Give reasons for the following:
Mosquitoes can be controlled by preventing stagnation of water through they do not live in water.

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