the main food of mosquito is the nector of flowers but the blood is not its food only female needs blood to lay eggs because a necessary protein found in blood is for egg laying although female get lipids and protiens froom blood for laying eggs for egg laying purpose not for food purpose
It's nature. According to your question, I can assume that you think that things of nature exist for a purpose. That's not true. For example, why do dogs exist? Mosquitoes are part of a natural balance of creatures, sort of like a food chain or food web, so many other creatures would die if their main food source, mosquitoes, died out. BLA BLA BLA...
Rome was noted for its crime bad food scorpions and mosquitoes.
The wrigglers of mosquitoes which lived in swamp areas serve as food for other fresh marine animals...
Garlic and Onions
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how mosquito digest their food
No
they eat food
Ptarmigans only eat plants, so their food can't eat mosquitoes!
They have no 'use' other than food for spiders in the food chain.
By taking blood from other animals.
food that is not covered