What is one way in which bacteria are different from viruses

Viruses are even smaller than bacteria and require living hosts — such as people, plants or animals — to multiply. Otherwise, they can't survive. When a virus enters your body, it invades some of your cells and takes over the cell machinery, redirecting it to produce the virus.

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viruses are the smallest and simplest life form known. They are 10 to 100 times smaller than bacteria.; The biggest difference is that viruses most have a living host- like a plant or animal- to multiply, while most bacteria can grow on non-living surfaces.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

i'd say that the moon rock is about 2.2 billion years old.