I think A but you should double check with some one else.
Answer:
* El sistema nervioso central está compuesto por el cerebro y la médula espinal.
* El sistema nervioso periférico está compuesto por todos los nervios que se ramifican desde la médula espinal y se extienden a todas las partes del cuerpo.
Explanation:
ojala.te sirva :D
Natural Disasters such as Volcanoes, Tsunamis and Earthquakes.
Molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
Answer
Only one type of amino acid could be coded for such synthetic mRNA, becacuse it contain only one type of codon.