In the 18th century, Carl Linnaeus published a system for classifying living things, which has been developed into the modern classification system. Recently the classification system of life was changed to include not five but six kingdoms, as well as three domains. Earlier classification attempts were based mostly on structural features. Classification of many species, old and new, continues to be hotly disputed as scientists find new information or interpret facts in new ways. Now, DNA technology has allowed scientists to re-examine the relationships between organisms to refine the classification system. The Kingdom Monera in the old classification system included all bacteria. What two kingdoms now encompass prokaryotic organisms? A) Bacteria and Archaea B) Eubacteria and Archaea C) Bacteria and Archaebacteria D) Eubacteria and Archaebacteria

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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the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

it is because according to the process , scientific inquiry is a process with many steps because each step occurs to the scientist and if you just skip a step there would be no steps to scientific inquiry.