The first three steps for solving the quadratic equation by completing the square are shown. Fill in the missing number in the last step. 9x2 54x = 7 9(x2 6x) = 7 9(x2 6x 9) = 7

Aggregation is the process of all of your data. a. gathering b. analyzing c. collecting d. observing

Darwin studied two different types of tortoises on the galapagos islands. sort the characteristics based on which tortoise they describe.

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils