The answer to this question is B
Birds such as eagles have feathers and reptiles such as a lizard has dry scaly skin. Birds are warm blooded, and reptiles are cold blooded.
And model does it show something exactly as it is in the world
These sorts of studies can help researchers determine the relative importance of nurture and nature in determining a trait. Nature here would refer to genetics passed down to an individual from its parents, whereas nurture refers to the environment the individual is exposed to.
Is this a question? I’m pretty sure this is not one