<p><br />I have a question in another sentence:</p>
<p>&nbsp;</p>
<p>&nbsp;&hellip; produced has been problematic due to contaminants such as carcinogenic organics and heavy metals contaminating soil and crops in such areas (Clarke and Cummins, 2015; Cincinelli et al., 2012; Singh and Agrawal, 2008), and due as well as soil worms, which bio-accumulate contaminants from sludge (Elissen et al., 2010)&hellip;.,</p>
<p>In this sentence, don&rsquo;t you think we should put &ldquo;to&rdquo; next to due, so it reads as:</p>
<p>&hellip;&hellip;&hellip;and due to as well as soil worms, which&hellip;&hellip;&hellip;&hellip;.??</p>
<p>I&rsquo;m confused if I should include &ldquo;to&rdquo; next to the &ldquo;due&rdquo; and before "as well as"??</p>
<p>Please let me know.</p>
<p>&nbsp;</p>
<p>thanks</p>