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.
Greenhouse gases have had a significant impact on the environment.
what is a good sentence for the word opposite
Brace for impact - we'regoing in!Please hand me that impact wrench.
The impact of the closing that factory will be huge on the local economy.
"You're making a big impact in my life!" screamed Tiffany.
A good sentence for the word baffled is:
Any sentence that properly uses the word additionally is a good sentence. Additionally, the above is a great sentence.
Removing the word "very" would have no impact on the meaning of the sentence
Your question is a good sentence using the word "common".
"I am using a sentence with the word economics."
There is not just one good sentence for "there," there are many.