Plant growth is limited by available nitrogen. Why is nitrogen fixation a limiting factor? There is very little nitrogen available after fossil fuel combustion utilizes the available nitrogen.
Nitrogen must be produced by bacteria due to the inability of recycling by decomposers.
There is no nitrogen in the atmosphere; it is only found in aquatic biomes.
The stability of nitrogen gas makes it difficult to turn into nitrogen for living things.

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

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

Which condition causes storms to occur