8. read "the mystery of earth's missing nitrogen solved" from scientific american
(
ived/)
a. in 3 - 5 sentences, summarize the main idea(s) of the article.
b. what led scientists to their new conclusions about the source of nitrogen?
c. how does this information impact your model of the nitrogen cycle?

Part of the total score for each program is the sum of five program component scores. on the free program, the sum of these five program component scores is multiplied by a factor of 2.0. yuzuru hanyu, of japan, earned scores of 9.07, 8.96, 8.89, 9.21, and 9.36 for the program components portion of his free program. how many total points did he receive for this portion?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning