How many ways can the word 'potato' be rearranged?

Kuhl found that babys brains are most open to learning the consonants in their native language at what age? and vowels at what age?

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide

When do you think it’s best to take the psat (what grade year / when in the year)?