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A significant portion of green house gas emissions come from methane,

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A significant portion of green house gas emissions come from methane,  [#permalink]

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19 Sep 2016, 00:33
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A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

A) A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

B) A significant portion of green house gas emissions comes from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

C) A significant portion of green house gases come from methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

D) A significant portion of green house gases comes from methane emissions, which, in terms of its contribution to global warming, are 23 times as powerful as carbon dioxide.

E) A significant portion of green house gases is methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

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Re: A significant portion of green house gas emissions come from methane,  [#permalink]

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19 Sep 2016, 01:40
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GMATantidote wrote:
A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

A) A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

B) A significant portion of green house gas emissions comes from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

C) A significant portion of green house gases come from methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

D) A significant portion of green house gases comes from methane emissions, which, in terms of its contribution to global warming, are 23 times as powerful as carbon dioxide.

E) A significant portion of green house gases is methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

Meaning : A significant portion of greenhouse gas emissions comes from methane and this portion is 23 times as powerful as carbon dioxide.

A) A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - Significant portion is single and it has be single, where come is plural.

B) A significant portion of green house gas emissions comes from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - correct as per meaning and precise.

C) A significant portion of green house gases come from methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - come is plural

D) A significant portion of green house gases comes from methane emissions, which, in terms of its contribution to global warming, are 23 times as powerful as carbon dioxide. - are is plural and portion is single.

E) A significant portion of green house gases is methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.[/quote] - meaning error, here portion come from methane...
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Re: A significant portion of green house gas emissions come from methane,  [#permalink]

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19 Feb 2019, 11:31
msk0657 wrote:
GMATantidote wrote:
A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

A) A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

B) A significant portion of green house gas emissions comes from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

C) A significant portion of green house gases come from methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

D) A significant portion of green house gases comes from methane emissions, which, in terms of its contribution to global warming, are 23 times as powerful as carbon dioxide.

E) A significant portion of green house gases is methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.

Meaning : A significant portion of greenhouse gas emissions comes from methane and this portion is 23 times as powerful as carbon dioxide.

A) A significant portion of green house gas emissions come from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - Significant portion is single and it has be single, where come is plural.

B) A significant portion of green house gas emissions comes from methane, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - correct as per meaning and precise.

C) A significant portion of green house gases come from methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide. - come is plural

D) A significant portion of green house gases comes from methane emissions, which, in terms of its contribution to global warming, are 23 times as powerful as carbon dioxide. - are is plural and portion is single.

E) A significant portion of green house gases is methane emissions, which, in terms of its contribution to global warming, is 23 times as powerful as carbon dioxide.- meaning error, here portion come from methane...

I believe the difference and deciding factor between B and D is B refers to methane itself (therefore uses Methane..is) where D refers to methane emissions (emissions...are). To make the correct comparison with carbon dioxide, you need to use the methane itself, not its emissions. B does this correctly.
Re: A significant portion of green house gas emissions come from methane,   [#permalink] 19 Feb 2019, 11:31
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