hi, I have a quick question,<br /><br />In general, when should one use effects? versus effect?<br /><br />I'm confused with the use of plural and singular, for example, in your edited document I just received, is the following correct? or should we use singular form, "effect"?<br /><br />
<p>Effects of contaminants on MNPs</p>
<p>Effects of coatings, aggregation, and dissolution on MNPs</p>
<br />Can you clarify it for me?<br /><br />thanks