1. A system with many parts that work.
2. These are made up of organs.
3. These are made up of tissues.
4. These are made up of cells.
5. The basic unit of structure in an organism.
A. Cell
B. Organ System
C. Organs
D. Organism
E. Tissues
B. Organ System
C. Organs
D. Organism
E. Tissues
Answer:
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