A police officer is called to the scene of a car accident. In his accident report he sketches the scene and describes it. According to his description the car went off o the road and hit a tree right after a bend. The driver claimed that a second car ran them off the road by hitting them from behind. Using his observations and his knowledge of physics, the police officer determined that the driver was not telling the truth. Explain how the police officer determined that the car was not run off the road by a second car that came from behind. In your response, be sure to include:

1. Labels of the forces that would have acted on the car it it were hit from behind.

2. Labels of the forces that must have acted on the car to have it follow the path indicated with the arrow on the sketch of the scene.

3. How forces affected the motion of the car.

Explain the side effects of cancer treatments

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

In one or two well-crafted paragraphs in your laboratory journal, summarize the process in which normal cells become cancer cells. your paragraph(s) must include each of the terms listed below. underline each term in your writing: