The answer should be 3, M.
For M, it is indicating to the organ gallbladder. The purpose of it is to store bile, which bile help physical digest fats. However, gallbladder is not the site that produces bile, that should be the liver.
Therefore, after bile is produced in the liver, they're stored in gallbladder. It then will be released through the bile duct to the site it is used for, which is the duodenum.
Yeah? why wouldn't it be. It can create energy just from light and we can harness it in solar panels.
The plasma membrane, because it's a selective permeable which means it only allows certain things in like sucrose.
I'm thinking it might be fossil evidence. Hope it helps!
I am generally confused as to of what you are asking. Can you post something so i can see what you need? I just am confused.