Which statement describes the structure of dna? a. a single strand of amino acids b. a single strand of nucleotides c. a double strand of nucleotides d. a double strand of amino acids

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae

Isotopes of the same element have differ in their

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.