Answer:
endemic: Common in a certain area or climate.
malaria: A serious disease that is spread by mosquitos.
mangrove: A tropical species of tree that grows in salty water on stilt-like roots.
migratory: Moving from one place to another during certain times of the year, especially in search of food and water.
seasonal: Occurring only during certain times of the year.
Explanation:
Flute , xylophone, and drums
Harmony, as it is the only answer that includes multiple sounds at the same time.