D. before cells without a true nucleus
<span>(decreased variation in tail feather color because no form of the trait is advantageous) Due to the fact that the tail color is no longer a necessity, so it will eventually stop being needed and variation will decrease.</span>
Coexist... They don't harm us... And they even protect us from other organisms outside our body
And in our guts they make vitamins :)
Plz give me brainliest
MASS: because it is the measure of the amount of matter in an object
Daily exercise and a healthy well-balanced diet.
