Exit which of the following is an example of a thermosetting polymer? a. polyethylene b. a linear polymer c. a branched polymer d. a cross-linked polymer

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

Construct at least two possible hypotheses for the student’s experiment.

How does the carbon cycle involve an exchange of carbon