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Eric Webb

Tiny pest a big threat to ash trees - The York Daily Record - 0 views

www.ydr.com/ci_18489343

unit2 pest nonnative

shared by Eric Webb on 17 Jul 11 - No Cached
  • Eric Webb on 17 Jul 11
     
    Example of an invasive species in PA.
Eric Webb

nsf.gov - National Science Foundation (NSF) News - Loss of Large Predators Caused Wides... - 0 views

nsf.gov/...news_summ.jsp

unit2 ecosystems predators

shared by Eric Webb on 16 Jul 11 - No Cached
  • Eric Webb on 16 Jul 11
     
    the loss of keystone species and the ramifications that is having on ecosystems globally
Eric Webb

Top Predators Preserve Ecosystems : Discovery News - 0 views

news.discovery.com/...edators-ecosystems-110714.html

unit2 keystone

shared by Eric Webb on 21 Jul 11 - No Cached
  • Eric Webb on 21 Jul 11
     
    The importance of keystone species to ecosystems.
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