There are many functional groups present in organic molecules. The ability to identify them relies on practice and knowing the characteristics and purpose of each functional group. Examples of functional groups are: hydroxyl, carbonyl, carboxyl, amino, phosphate, sulfhydryl. I encourage you to research on each of the different groups to understand their purpose, characteristics, and structure as it is the best way to learn to distinguish between them.
Answer:
cell wall and nucleus are the answers
They sit on top like, they don't mix. right ?
I would say true because for them life will not go on and the animal that is eating another animal there will not be no more of them and they will all die off
I think it is called the METAMORPHIC ROCK.
It formed not only when the pressure changes but also with the heat.
Good luck :)