Answer: blood travels from the heart through arteries and blood travels to the heart through the veins.
I hope this helps
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant element in our atmosphere and 7th most abundant in the universe. It is vital in the formation of nitrogenous bases which are the key bonds that form nucleic acids such RNA and DNA.
Ribosomes that assemble proteins
2
hope i helped my dewd <3
