Answer:
Biotechnology is a new branch of science
Explanation:
The begining of biotechnology was somewhere around the 1920s i think so it is not old
Sorry but I can’t help you right now but later I’ll try
<span>In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called MUSCULI PECTINATI.
Musculi pectinati or pectinate muscles are identified as specialized intracardiac muscle. The muscular ridges are like combs. These ridges help the right atrium dilate without much walls stress during adverse loading conditions.</span>
