Asap in order to explain dna's consistent width, watson and crick concluded that a. one nucleotide will stretch its bonds to meet the other. b. one strand must run opposite of the other. c. one single ring base will always bond with one double ring base.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.