What is considered the first symbolic artifact found

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Where is the nictitating membrane found? a. between the eyelid and the eyeball b. between the retina and the optic nerve c. between the outer and middle ear d. in the organ of corti in the middle ear

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports