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.
A simple <em><u>refracting</u></em> telescope uses two convex lenses to gather and focus light from a distant object.
The answer is (patients do not receive harmful or ineffective medivatikn
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