Biology, asked by Kushalchahal, 11 months ago

Please answer 19 and 20

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Answered by jasmine283860

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19. (a) it is an important way because vaccines are the weekend that was introduced in our body for strong the immune system....

(b) malaria and dengue is caused by female mosquito (anopheles)....

20. (b) part

1 movement is migration

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