Ten !
phosphorus, one of the most important elements in life, is found in
a. dna.
b. sugars.
c. proteins.
d. all organic compounds.

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