Answer:
retroviruses
Explanation:
Retrovirus have an enzyme known as reverse transcriptase which allows them to synthesize DNA from RNA going against the central dogma of life which is the synthesis of RNA from DNA. This phenomenon is called teminism.
I think maybe the nephrons ...but not sure...
Bro I think it's A
Gravitational pull comes from the core. How rotated u are won't matter, but how far u are from the core will matter.