Fact 1: Many nucleotides bind together to form a chain called a polynucleotide.

Fact 2: Nucleotides are the building blocks of DNA .

Given the two facts above, answer the question "what are the building blocks of DNA?" with the following options: 
- Plants growth
 - Plant reproduction
 - Organic compounds
 - it needs them
 - Earth orbiting the Sun
 - major threat to health
 - Chemical energy
 - polynucleotides


 

        polynucleotides 