Tropical rainforests
(i) Diets heavy on fruits, (iv) Loud voice, (v) Sticky pads on feet, (viii) Bright colours, (ix)Strong tails, (x) Long and large beak.
Polar Regions
(ii) White fur, (iii) Need to migrate, (vi) Layer of fat under skin, (vii) Wide and large paws. I think that different characteristics can be adapted for different regions.