Malaria is spread by female Anopheles mosquitoes.
Dengue and chikungunya are transmitted by Aedes mosquitoes.
The female Anopheles mosquito transmits the Plasmodium parasite, which causes malaria.
Dengue, Zika, and Chikungunya are transmitted by Aedes mosquitoes.
Therefore, the correct answer is: Malaria.
List I | List II | ||
A. | Common cold | I. | Plasmodium |
B. | Haemozoin | II. | Typhoid |
C. | Widal test | III. | Rhinoviruses |
D. | Allergy | IV. | Dust mites |
Given, the function \( f(x) = \frac{a^x + a^{-x}}{2} \) (\( a > 2 \)), then \( f(x+y) + f(x-y) \) is equal to