Explain the concept of survival to the fittest

Individuals in a population must compete for limited resources.

If an organism is born with traits that help it survive and reproduce, it will likely have more offspring than organisms without those traits.

Beneficial traits can eventually spread throughout an entire population

Explanation:

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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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