What is the Polymer for a Nucleic Acid? Nucleotide
Polypeptide
Monosaccharide
Nucleic Acid

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Aplant may open end close its stomata to prevent excess water loss and maintain

List five ways we are indebted to phytoplankton