Good to hear from you and I look forward to the texts you'll send later this month.<br /><br />Here are my thoughts about your questions.<br /><br />
<p>1. Bioaccumulation and gut functional changes [Seems correct based on a google search, which turned up many responses for the key word, &ldquo;gut.&rdquo;]</p>
<p>2. Nano-metal oxides (nano-products): <span style="text-decoration: underline;">Environmental</span> dynamics of nano-products in heterogeneous systems [fixed the typographical error for &ldquo;environmental.&rdquo;]</p>
<p>3. In collaboration with __ [Hard to decide without seeing the whole sentence. Could be &ldquo;while collaborating with,&rdquo; &ldquo;After collaborating with,&rdquo; or the original as shown here.]</p>
<p>4. Impact of nano-metal oxides on <span style="text-decoration: underline;">the</span> ocean environment [Would add &ldquo;the&rdquo;]. Articles (the, an, a&hellip;) seem useless but are what native English speakers use and write. Personally, I think articles don&rsquo;t have any meaning and will eventually will be dropped from the English language, which like all languages, changes constantly.</p>