The supplement is taken in the form of a tablet that is swallowed. Each tablet is covered in a substance that breaks down only in alkaline conditions to release the components of the supplement. Suggest why this covering is important if the supplement is to work effectively in the alimentary canal.

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

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes