1
a climate that is dry with very little rainfall
arid
an elevated or mountainous region
the leaves and flowers of plants
foliage
the physical features of the land’s surface
terrain
a densely forested area with consistently high rainfall and a diverse ecosystem
rainforest
of great size or proportion
vast
a grassy plain in tropical and subtropical regions, with few trees
savanna
the boundary zone in Africa between the Sahara to the north and the rainforests to the south
Sahel
having a rough, uneven surface
rugged
a large area, especially one that is fairly flat
expanse