False in order for an ecosystem to survive there has to be some sort of competition. for example, if there were no sharks to eat little fish the little fish would over populate and then the little fish would run out of food which then means that whatever the little fish ate is now extinct and so on hinting the food chain's name. If it wasn't for competition nothing would survive
We would need to see the diagram in order to answer the question correctly. without the diagram we can't help
<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>
1) A
2) B
3) B
4) C
5) B
6) C
7) D
8) B
9) A
10) A
Im thinking C. The skeletal system but not 100% sure.
