Describe some methods used to determine phylogeny

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center

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According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes