1) the cause of a change in an organism's environment
2)(name) molecule made of sugars
Since this is not my area of expertise, I searched Google under the key words "'environmental change' cause" to get these possible sources:
http://www.wiley.com/WileyCDA/WileyTitle/productCd-047085362X.html
http://www.environment.gov.za/soer/reports/gauteng/Chapter%203%20What%20Causes%20Environmental%20Change.pdf
http://en.wikipedia.org/wiki/Climate_change
http://www.amazon.com/Environmental-Change-Pacific-Basin-Chronologies/dp/0471949450
http://www.eolss.net/E4-08-toc.aspx
Under "'sugar molecule'" I found:
http://www.exploratorium.edu/cooking/candy/sugar.html
http://www.thewhiskystore.de/experts/starch.htm
(Broken Link Removed)
http://www.accessexcellence.org/AE/AEC/CC/DNA_glossary.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.