An essential nutrient<span> is a </span>nutrient<span> that the body cannot synthesize on its own -- or not to an adequate amount -- and must be provided by the </span>diet<span>. These </span>nutrients are necessary<span> for the body to function properly. The six </span>essential nutrients<span> include carbohydrates, protein, fat, vitamins, minerals, and water.</span>
Like all other reptiles, birds have scales. Also, birds lay eggs like other reptiles.
answer is polygenic inheritance
A mutation in DNA affects the entire protiens synthesis process by producing the incorrect amino acids in the wrong places, causing issues with the ability of the organism to survive depending on what the protein is in charge of.
