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1) The atmosphere formed as a result of the cooling if earth so it released water vapor, nitrogen and carbon dioxide. It has changed by the effect of the cyanobacteria which released oxygen to air thus increasing the percentage of the oxygen level in the atmosphere.
2) By the condensation of the water vapor in the atmosphere. they have changed in their pH as a result of dissolved carbon forming carbonic acid in water then their acidity decreased until they became neutral.
3) The hydrosphere formed as a result of the atmosphere and the change in earth's temperature.

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1) The cyanobacteria which made photosynthesis process releasing oxygen into air.
2) The banded iron formations. It changed as all the silica and iron were bonded with oxygen so there were no enough iron or silica for oxygen to combine with.

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The rise in the graph is because the increased production of oxygen in air by the cyanobacteria so the iron was banded with oxygen that leaded to the increased production of the banded iron formations. then the decrement resulted from the lack of the iron metal as all the iron was banded with oxygen so the banded iron formation decreased.

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My soil triangle, all the percentages are written above the diagram.

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here is the answer of the work sheet

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Mass movement

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Here is a short brief about confined and unconfined aquifers and an image that illustrates the difference between them.

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Sorry for being late the internet was horrible, I wish you liked it.