Explanation:
1)
building blocks of Carbohydrates are monosaccharides that are simple sugars
2)amino acids are the building units of proteins there are 20 amino acids found in human body that are building blocks of proteins
3)Nucleotides are the building blocks (monomers) of nucleic acids, DNA and RNA.
The Atria Are the Heart's Entryways for Blood
The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs. The right atrium receives deoxygenated blood returning from other parts of the body.
The heart
The answer is <span>Chytridomycota.</span>
