dear editor,<br /><br />I have a question in your edited document yesterday. please answer to my question soon (thanks in advance)<br /><br />One of your edited sentecens below, I'd like to change it as follows.&nbsp;Can you please check if the following sentence I wrote is ok?<br /><br />"Whereas there are only a few recent studies on NPs where two studies examined the effects of SWCNTs on contaminants (i.e. phenol, PCBs) present in wastewater treatment systems and sediments, showing increased contaminants removal with reduced cytotoxicity [Qu et al., 2014; Parks et al., 2014]. The other studies on MWCNTs observed the influence of MWCNTs on contaminants and toxicity to soil microbes."<br /><br />