Identical glacial weathering and erosion patterns discovered on separate continents

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The identical glacial weathering and erosion patterns discovered on separate continents are a proof of the plate tectonics theory.

Explanation:

In recent times, with the more and more research that has been conducted, it has been noticed that there are physical features that are identical, but on separate continents. These physical features are of glacial origin, or rather caused by glacial weathering and erosion. Considering that the patterns are identical, it is clear that they have occurred at the same time, and that they have occurred on the same place.

This has been seen as big proof of the plate tectonics theory. This kind of features have been found int he southern part of Africa and northern part of Antarctica, which just supports the theory that they were once part of a same landmass. That landmass is called Gondwanaland, and it also was consisted of South America, Australia, and India.

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What is the average total amount of rain for a year about 400mm<br>

Mashutka [201]

Answer:

1mm rainfall means every one square meter area is filled with the water of height 1mm. ... Take a vessel of 1 square meter in dimention and keep it in an open space during rain, you will be having 1mm height of water in it that is 1 litre of water in it at the end of the rain.

Similarly, 400 mm = 40 cm of water

Further ,all these calculations are made taking into consideration-:

no loss of water to the ground
no evaporation to the air &
the opening of rain gauge is neither partially blocked nor more open to air.

Explanation:

We can safely say, 400 mms of rain means the height of the rain is 40cms above the ground in the area where rain pours.