Answer:
In ancient times, the geographic features of China isolated the country from the rest of the world. Natural barriers, such as mountains, deserts, rivers, and seas, made travel to and from China challenging. These features also allowed people living in different parts of China to develop their own cultures.
Explanation:
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buck has admiration for nature
They change shape due to a number of reasons.
The easiest reason to understand why they change is that they erode.
The coasts around the the world erode due to waves hitting cliffs, the wind batting against the coasts etc. Over a long period of time we can see that they change in shape.
(sorry I don't know why they move)
An address of your house
A date of when you wrote it
Dear Sir/Madam
From or Yours Sincerely
Paragraphs
First Person
It can be past, present or future tense
It can be formal or informal