Yes correct.
It will make the sentence more clear and understandable.
No, it is not grammatically correct. "Such a" can only be followed by a base-form adjective, like "large." If you want to make a comparative sentence, you might say, "Why do meteors have a MUCH larger impact on the Earth THAN on the moon."
A compound subject for impact would have to be two words that are subjects in the beginning of the sentence and the word impact would have to be in the sentence somewhere.
may be i dont know.. !
EVERYONE!!!!!!!!! EVERYONE CAUSE THERE IS NO MORE OF THEM!!!!!!!!!!!!!!!!!!!!
he opened trade routes for explorers.
Our regional measures have had a significant impact on unemployment.
notting the name arvin was the impact it was made through his journey of life
Brace for impact - we'regoing in!Please hand me that impact wrench.
The baseball collided with his face with such an impact, that it broke his nose.
Greenhouse gases have had a significant impact on the environment.
The meteoroid collided with a devastating impact.