Answer:
A c-shaped spine.
Explanation:
The correct answer is - A c-shaped spine.
Reason -
A c-shaped spine is a trait of Quadri-pedal spine not of bipedal spine.
Organisms with the most favourable traits will increase their success rate in a particular environment. Organisms with favorable traits are more likely to reproduce and pass on their traits than organisms without favorable traits, allowing it to survive.
Answer:
Lungs and Endoskeleton.
Explanation:
Gills helps it live in water, and Scaly skin doesn't really apply
