I think the correct answer is
(A) changing in abiotic factors
An <u>attribute</u> is the equivalent of a field in a file system.
In a computer, a file system or a filesystem refers to a system where you name the files and keep them logically in order to use or retrieve them later. Without this system, whatever information you store, it would not be isolated into individual files and it would then become difficult to identify and retrieve them.
A file management system in database management system, serves a similar purpose. It allows you to access single files or tables at a time. Here, the data is stored directly in files, which makes it easily accessible.
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Answer: The stability that the Roman, Han, and Gupta Empires brought trade in Asia on the Silk Roads. This greatly benefited all three empires and the areas in between. Wealth and ideas passed along the trade network providing the money and ideas necessary for Golden Ages.
With over two million lakes and rivers and 20 per cent of the world’s freshwater, Canada has an incredible abundance of aquatic natural resources. Canadians share a deep historical connection to freshwater; we rely on it for transportation, for resources, for employment, for food and for recreation — swimming, boating, fishing or simply admiring the scenery of a natural lake or wild river.
Unfortunately, many of Canada’s freshwaters are no longer the pristine ecosystems they once were. At CWF, we are working to encourage a better balance between the needs of our society and of the ecosystems that sustain us.
