Because that way it could be isolated and easier to study.
Answer:
Seismic waves, Outer, and Mantle.
I’d say D. The cost of treatment becomes more affordable than with medical insurance because treatment is extremely expensive and medical insurance lowers the cost.
Bacteria, a prokaryote, has circular DNA, as do mitochondria and chloroplasts. This provides support for the Endosymbiotic Theory, which states that the mitochondria and chloroplast in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote).
