What would likely have happened to earth if no icy debris had arrived? a] it would still have oceans but no atmospheric water. b] it would still have atmospheric water but no oceans. c] it would have no oceans or atmospheric water. d] it would have traces of water beneath its surface. e] it would have released water in volcanic outgassing.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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