The author’s contrast between "persistence" and "stubbornness" (paragraph 7, sentences 7–8) advances her argument in which of the following ways?.

Tissues that carry food water and nutrients throughout the plant

Respiration involves the breakdown of sugar. this process results in the production of energy for the cell. i'm order for cells to produce the most energy, what gas should be present?

On a test the graders have a mean of 77 and a standard deviation of 8. if we can approximate the distribution of these graders by a number distribution what percent of the students. a) scores higher than 77? b) should pass the test (grades > 60)? c) should fail the test (grades < 60)?