No somethings only have one cell. they are called unicellular organisms.
C. testable and observable
Answer:
Energy Metabolism
Explanation:
In order to a living cell you need to be able to reproduce, have energy metabolism, etc.
Answer:
A synovial joint
Explanation:
because it is highly moveable, allows for flexibility, has ligaments for stability, and has cartilage for protection of the articulating bones. ... It is a synarthrosis joint because it cannot move.
