I believe it is D. but i am unsure and i hope i helped u :)
By ear she can hear the sound
I think may it is correct
The answer is A, because the 'filling' is the jelly like cytoplasm and the edge is the cell wall
Answer:
A
Explanation:
Biofilms are a colony of bacteria that secrete a layer of extracellular matrix (made of polymeric substances of proteins or polysaccharides) that is hard to penetrate with antibiotics. The bacteria in the biofilm also function in coordination and are able to adapt to different factors hence making them hard to eradicate. They can be found in the inside surface of sewage pipes.
