Source: Official Guide for the GMAT 13th Ed. Sentence Correction; #121 Official Guide for the GMAT 2015 14th Ed. Sentence Correction; #121

▲
1

New theories propose that catastrophic impacts of

New theories propose that catastrophic impacts of asteroids and comets may have cause reversals in the Earth's magnetic field, the onset of ice ages, splitting apart continents 80 million years ago, and great volcanic eruptions.

2 Explanations

▲
1

Luis Alania

are action nouns same as gerunds? thanks!

Sep 9, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Hi Luis! Yes, gerunds are the noun forms of verbs or, to phrase that another way, action nouns :)

Sep 12, 2016 • Reply

▲
1

Gravatar Mike McGarry, Magoosh Tutor

May 25, 2013 • Comment

Add Your Explanation

You must have a Magoosh account in order to leave an explanation.

Learn More About Magoosh

Official GMAT Material

Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

Nova's GRE Prep

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 9.6 Sentence Correction

Section 9.6 Sentence Correction

Improve Your Score

Magoosh GMAT is an affordable online course for studying the GMAT.

Learn More About Magoosh

Share Post

Email

Facebook

Return to Forum