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Site 1: "Comparing Descriptive and Experimental
Research"
Which type of research method attempts to answer the question, "Why are they doing that?" (Site 1)
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Explain why phospholipid molecules form a bilayer. (3 marks)

Mutations associated with albinism affect proteins involved in synthesis

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.