Answer:
water scarcity -> ____hot regions
trade and transport -> ____natural harbors
poor navigation -> ____mountainous regions
Step-by-step explanation:
Mountainous regions:
In temperate zones, mountains are generally considered a harsh and even hostile environment, and are, in fact, less populated than plains that enjoy a more favorable climate. Lower air pressure, harsher weather, hydrology more irregular they force organisms to adapt.
Natural harbors:
A natural harbor is a space destined and specially oriented to the flow of goods, people, information or to provide shelter and security to those boats or ships in charge of carrying out these tasks.
Hot regions:
In hot regions, winter and summer don't exist, since they have a type of climate in which you can only speak of a wet season and a dry season. So water is usually a scarce resource