Natural resources in UAE

Things people get from nature and use to live are called natural (a)   . (resources/material)

People who lived at the coast ate fish and used pearls to make a (a)   . (living/live)

Dates, camels and sheep are natural resources used by people who lived near (a)   to make a living. (coast/oasis)

People who lived at the coast and people who lived near an oasis needed (a)   to make a living. (natural resource/things)

A century ago, the most valuable natural resource in the Trucial states was (a)   . (pearl/fish)