Answer:
Not enough information
Explanation:
You haven't given any reference. However, they are referred to as the building blocks of life because, for example, in Prokaryotic cells, which are unicellular, everything required for them to survive and reproduce is all found within a single cell.
Answer: 1. Cambrian period, 5. rotation at the shoulder joint. 3. d. notochord, 4. d 2. d.
Explanation:
They are hydrophobic and insoluble in water
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