A codon can be found on which?
mRNA
ORNA
ORNA

a codon can be found on mRNA

Explanation: codons are created when groups of nucleotides are conected to form a animo acid. the formation is all in the mRNA then the animo acids combine to form proteins. proteins are formed when animo acids are "dehydrated" and form a water molecule then the rest combine into a protein and that protein can be in any form for various tasks.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.