Endometrial cells are able to penetrate the thinner wall of tissue in the uterine tubes allowing cells to escape and deposit on the peritoneum. the lateral ends of the uterine tubes are open to receive ovulated oocytes. if endometrial cells migrate backward through the uterine tubes, they can escape and deposit on the peritoneum. endometrial cells are able to penetrate the thinner wall of tissue between the posterior fornix of the vagina and the rectouterine pouch. all of the answers are correct.

Read the following scenario to answer the following question. 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. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

Long term exposure to waves can cause sunburns and skin cancer.