The evidence that scientists currently have suggests that life on earth a. began in the water b. first evolved around 3,500 million years ago c. began as single-celled organisms d. a and b e. all of the above

e. all of the above

Explanation:

Life could not arise in the continents because at the time there was no ozone layer. Intense u.v rays alter dna generating mutations that would not allowed for species to thrive.

Fossil records (prokaryotes) from 3.5 billion years ago have been found, these  fossil show single cell organisms.

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