Multiple ChoiceWhich of the following best distinguishes the Carboniferous period from the Devonian period?29views
Multiple ChoiceWhich groups of organisms are most at risk of extinction due to their limited population sizes and specialized habitats?32views
Multiple ChoiceA diagram depicting evolutionary relationships based on shared derived characters is called a:16views
Multiple ChoiceThe discovery of which new fossil hominid led Dr. Wood to re-evaluate his study on human origins?61views
Multiple ChoiceWhich of the following fossil discoveries best demonstrates a change in the Earth's climate?35views
Multiple ChoiceWhich development has had the greatest impact on the understanding of evolutionary relationships?39views
Multiple ChoiceWhich of the following traits was most important in enabling the first plants to move onto land?65views
Multiple ChoiceAccording to fossil records, how many new species of snails with planktonic larvae are estimated to have arisen between 50 and 35 million years ago?34views
Multiple ChoiceWhich of the following statements supports the hypothesis of an 'RNA world' on early Earth?25views
Multiple ChoiceMolecular phylogenies show all land plants are a monophyletic group. This suggests ________.31views