Answer:
Chitin
Explanation:
This glucose derivative is in fact the main building block of cell walls in not only arthropods (including the shrimp), but also fungi and insects, and also has a structural function in the scales of fish. The most similar commonly-known substance in terms of function is keratin, which makes up our hair and nails.
No likelihood. Fraternal or identical no twins have the same biological personality.
The process is called photosynthesis and it takes place in the chloroplast of a plant cell