What is a serious disease caused by protozoa?

Malaria

Explanation: Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodium protozoa cause malaria.

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maliria

Explanation:

Bulgaria is worldwide famous for its folklore and opera singers and musicians and it is especially proud of its rich folklore traditions. Folk dances, music, national costumes and traditional rituals have an important place in the life of Bulgarians.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).