Why would there be many biodiversity hotspots on islands?

Answertropical depression;

Answerland;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!

Ineed you to put up a picture of the map so i can you as much as possible.