You are presented with the question "what are the building blocks of DNA?" and the following answer choices: 
- Plants growth
 - Plant reproduction
 - Organic compounds
 - it needs them
 - Earth orbiting the Sun
 - major threat to health
 - Chemical energy
 - polynucleotides

Now knowing that many nucleotides bind together to form a chain called a polynucleotide and nucleotides are the building blocks of DNA , choose the best answer.


 

        polynucleotides 