Free images results:
 

Tropic pictures, stock photos and images

 
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Cactus 1 Royalty Free Stock Image
Author: Minthu
Kiwi Stock Photography
Author: Radovan
Eagle Stock Photography
Author: Alexbannykh
Parrot 2 Stock Photos
Author: Cjwright
Sunset Royalty Free Stock Photography
Author: Back_me
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Tropic mix Royalty Free Stock Photo
Author: Ersler
Tropic bar Royalty Free Stock Photo
Author: Goce
Tropic mix Royalty Free Stock Images
Author: Ersler