Which of the following can be a basis of difference between a salamander and a house-wall lizard apart from their habitat?
A.Egg-laying feature
B.Three-chambered heart
C.Cold-blood
D.Scales on the skin✓ Correct
Explanation
Lizards have scales on their skin, while salamanders (amphibians) have smooth, moist skin without scales. This is a key physical difference between the two beyond their habitat.
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