If the environment is a windy and sandy area, floppy ears could prevent sand or dirt from directly going into the ears, that’s my prediction.
Lipids are made of two parts fats and oil .
Fats is further consists of glycerol and three fatty acid tails. A organic molecule of glycerol consists of hydroxyl group (OH group) and fatty acid contains long hydrocarbon chain which is linked to a carboxyl group (COOH group). Lipids are non-polar in nature and water insoluble .
The answer is A. Excretion I hope this helps
Cerebellum is the correct answer you are looking for
Cell junctions in plant cells are called plasmodesmata and communicating junctions in animal cells are called gap junctions