Scientists classify organisms into groups, usually with a dichotomous key. using a dichotomous key is like solving a puzzle, one in which you make choices about the organisms you are trying to classify. to classify this organism, you must complete the second tier of this dichotomous key. what would be the best choice for the second tier?
a) size of body
b) insect or sea creature
c) six legs or eight legs
d) two body segments or three body segments

Which of the following initial observations would more directly lead to this research study? a) ginko biloba is cost effective and also possesses heart-protective, antioxidant, anti-inflammatory properties. b) metformin is an effective treatment of patients with t2d, but shows side effects that complicate the disease state. c) over the past several years, the cost of treating t2d within the united states has increased dramatically. d) many plants contain molecules that improve the health and quality of life of patients with a variety of diseases like t2d. e) t2d affects millions of individuals in the usa and worldwide many of who could benefit from improved therapies.