plays the role in skeletal muscle movement
Answer:
The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients. Earth's environmental spheres. Earth's environment includes the atmosphere, the hydrosphere, the lithosphere, and the biosphere.
Explanation:
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These structures are called Vestigial structures, they resemble structures from the organism's ancestors, but don't have a real purpose for them now.
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