Two students in a science classroom are debating about whether the tables are made of wood or plastic. As the teacher passes by. she suggests, "Use cell theory to find the truth!" SEP Plan Investigations Propose a scientific investigation to determine whether the tables are wooden or plastic. Include your hypothesis, what steps the students should take, and any materials they might need to carry out the procedure.​

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Name the part of the the brain labeled "e".