Answer :
Answer:
amino acid-protein
cellular resp-metabolic process
circulatory sys-blood circulation
digestive sys- ingestion
energy- power
metabolism- absorption
molecule- fragment
oxygen- breath
respiratory sys- lungs
system- method
Answer:
amino acid-protein
cellular resp-metabolic process
circulatory sys-blood circulation
digestive sys- ingestion
energy- power
metabolism- absorption
molecule- fragment
oxygen- breath
respiratory sys- lungs
system- method