Being born with the genes, and evolving to reach food easier
Maybe, IDK Tbh XD
Answer:
the appearance of the peacock shows he is healthy, and if the peahen mates with him, it is likely that their offspring will also be born healthy. you would want to reproduce with the fittest individuals of your species and guarantee your species will continue to thrive.
Explanation:
They are important because so people do not get sickness
All I know is that you can get a short-term diabetes when you're pregnant, because my mom had diabetes when she had me and my sister. It comes from the cravings, which for her were salty and very sweet, and sounded very disgusting in my opinion.