<span>D.) He analyzed data collected by Tycho Brahe.
[ More Information. - Issac Newton </span>calculated the gravitational force on orbiting bodies, G. Galilei <span>examined the motions of planets through a telescope.]
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Answer:
Viruses have to invade the body of a host organism in order to replicate their particles. Therefore, most viruses are pathogenic. The main difference between bacteria and virus is that bacteria are living cells, reproducing independently and viruses are nonliving particles, requiring a host cell for their replication.
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