Little information is known of the communities in the tropical and temperate zones.

There was an expanse of forests which were outside the tropical zone.

For instance, humans on Earth have always heavily used tropical zones.

It is also the northernmost Survivor season held to date, well outside of the tropical zone.

In areas south of where the advanced nations were, in the tropical zones.

The story put out is that they went to make some 'on-site studies' of conditions in the tropical zones.

Those who lived in tropical zones rarely understood the problems of winter weather.

It is the only region of Brazil located outside the tropical zone, with clear variations about the seasons.

The species occurs in a number of tropical and subtropical zones.

The design of the garden features temperate, tropical and desert zones.