You fall backward and hit your head very hard on a sharp rock. The blow to your head causes you to lose consciousness and stop breathing. You most likely hit what part of your brain?

cerebellum

frontal lobe

brain stem

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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silty loam

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