Number 6 is c. number 7 is a. and i'm not sure
of number 8 sorry
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Answer: C. Squamous epithelial tissue.
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They're alive, they rely on the sun, and they require water.
Matthias Jacob Schleiden was a German botanist who, with Theodor Schwann, cofounded the cell theory. In 1838 Schleiden defined the cell as the basic unit of plant structure, and a year later Schwann defined the cell as the basic unit of animal structure.
Answer
There is not enough antibody-producing clones during development therefore the immune system suffers.