They have evolved into the best length for their environment.
Answer:
A-color
Explanation:
Minerals could have the same color, and you can't depend on color to tell you that.
The reducing sugars are mainly monosaccharides where all polysaccharides are non-reducing sugars. The reducing sugar can reduce the capric ions of the Fehling or the Benedict solution into the cuprous ions whereas, the reduction of cupric ions into the cuprous ions is not achieved in the non-reducing sugars.
That would be an ionic bond. Which is an attraction between a cation and an anion.
