Ineed some grading a marine biology exam, i'd really appreciate any assistance i can get! you so much!

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Which characteristics must an object possess in order to be considered alive?

Which nutrient tends to cycle within a single ecosystem?