14. Dermis
15. Chemical
17. Virus
18. Antibodies
19. Gas exchange
20. Ligament
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A long carbon and hydrogen chain and a carboxyl group.
In images of fatty acids (the monomers of Lipids), it is depicted as a long carbon chain with hydrogen on the ends and connected to them as well, yet on the clear side is the carboxyl group.
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Hello
the answer is sickelle cell disese
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Rocks are abiotic
(Soil?) is made of both abiotic and biotic materials
Sea shells are biotic
The organelle called the Mitochondria, also known as the powerhouse of the cell
