As...As (Japan is in the lead, producing twice as many industrial robots as...)

[Volcano1985]

Forests come under increasing pressure as the population increases as so many people use firewood for cooking.

Japan is in the lead, producing twice as many industrial robots as the rest of the world combined

Could you explain as...as in these sentences ?

[Milanya]

1. as - since; because: Forests come under increasing pressure as the population increases, although the whole sentence ( Forests come under increasing pressure as the population increases, as so many people use firewood for cooking.) looks extremely awkward. Second "as" ought to be replaced by "and."
http://dictionary.reference.com/browse/as

2. The expression as...as is used to show the comparison of quantity. twice as many as = two times more than
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con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.

[Cerberus™]

[Milanya]

[Gray]

[Milanya]

[Gray]

Isn't that separation added by comma enough for us to stick to 'as' instead of submitting to 'because'?
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First lesson - English, not english. I, not i. ~A student of English

[Milanya]

Regardless of the comma second "as" in this sentence does not sound natural. People do not talk like this.
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con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.

[Gray]

I may be wrong but I thought 'as' is a glue here which binds the clauses -- 'As the population increases', 'forests come under increasing pressure' and 'so many people use...' more strongly than 'because' does. 'Because' seems to incorrectly shift the attention to 'firewood for cooking'.
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First lesson - English, not english. I, not i. ~A student of English