The correct answer to your question is<span> The common nucleic acid sequences of polar bears and black bears can be deduced from their classification in the same genus, Ursus. In this sentence, it will explain that there is a hierarchy among organism and by the word "genus", this means this is one of the part of the hierarchy.</span>
They cannot move freely but they can vibrate
The hole in the Ozone Layer
Peristalsis is what moves the food in the digestive system