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I was reading a textbook and found this sentence:

> 海や山もあれるそうです。

I don't understand what the や is doing there with も.

The full piece where it comes from is:

> あさっての夕方ごろからくずれるそうです。気温も下がるそうです。海や山もあれるそうです。

And the person was answering to a question about weather forecasts.

Is that supposed to mean something like "Both the sea and the mountain..." or
is it just a typo?
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2016-08-24T16:59:52.450
38688
2016-08-25T03:31:44.860
2016-08-25T02:46:40.660
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question
grammar particles
Use of particle や with も
It tells that the weather is going bad from around afternoon the day after
tomorrow, and the sea and mountains will also have bad weather.

や and も is used to add sea and mountain, to indicate the bad weather is not
just there but also has wider scope and impact stretching over sea and
mountains.
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2016-08-24T19:12:15.150
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2016-08-24T19:12:15.150
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answer
や is being used here as the "incomplete" list particle. It implies there are
other things which could be included in the list. Contrast this with と、which
is used for "complete" lists.

For example:

私の好物はスープやハンバーガーです。 My favorite foods are soup and hamburgers [among other
things].

私の好物はスープとハンバーガーです。 My favorite foods are soup and hamburgers [and nothing
else].

As for も, it is being used to emphasize that _both_ the sea and mountains are
going to be rough.

[EDIT] I'm not a native, but to me if it had said 「海も山も」that would seem to
downplay whether or not there are other things that will be rough, and
emphasize even more strongly that it is both that will be rough.
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2016-08-24T20:48:10.820
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answer
> あさっての夕方ごろからくずれるそうです。気温 **も** 下がるそうです。海 **や** 山 **も** あれるそうです。

It's using 山 **も** to say "Adding to / Beside くずれる(=雨が降る/it will rain) and
気温が下がる(temperature will drop), 海や山 will _also_ be rough."

The も in 気温 **も** is being used in the same way: "Adding to / Beside くずれる(the
rain), the temperature will drop, _too_."

The や implies that places/areas other than 海と山 will also be rough. Compare:

> 海と山が荒れる -- (Just) The sea and mountains will be rough.  
>  海と山 **も** 荒れる -- Also, the sea and mountains will be rough.  
>  海 **も** 山 **も** 荒れる -- (Also,) Both the sea and mountains will be rough.  
>  海 **や** 山が荒れる -- The sea and mountains and other places will be rough.  
>  海 **や** 山 **も** 荒れる -- Also, the sea and mountains and other places will be
> rough.
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2016-08-25T02:38:10.443
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2016-08-25T03:31:44.860
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answer