A photographer wants to share her photos with people in other parts of the world. What are two reasons the photographer would choose a digital signal rather than an analog signal to share the photos? A. The digital signal can be copied many times without losing quality.

umB. The digital signal could easily lose information because of noise over long distances.

C. The digital signal moves gradually between an infinite number of values.

D. The digital signal is less vulnerable to noise and more likely to arrive intact.

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

What feature of cell theory is best demonstrated in the image

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