The Burgess Shale preserves a remarkable fossil record of: a. marine life during initial diversification of animals in the Cambrian Period, 505 million years ago. b. the tracks of dinosaurs walking on land. delicate flowers and mushrooms from the early invasion of land plants. c. molecular evidence of bacteria and other organisms. d. plants, insects, and mammals around 50 million years ago, when the age of mammals began.

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Is a fossil fem that support wegener's hypothesis of continental drift a. gondwanded b. kannemerid c. mesosaurus d. glossopters