I would say that it is B. thinner.
They are mostly habittated to watter because they requres oxygen more from water or there organ setup to do it works properly under water.
I think it is control group
Answer: Tissue
A tissue is the level of organization that is shown in the image. A tissue is a group of cell, found in plants, animals and humans. The cells in the tissue are similar in structure and function. The study of tissues in the living organisms is called as histology. An organ is formed when multiple tissues are grouped togethe
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