The word Carcases is misspelled against Carcasses, which is plural of "Carcass"
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Carcasses has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings carca & es which should not be misspelled with single 'S'
Wrong Spelling:  carca-s-es 
Correct Spelling:  carca-ss-es 
Explore spell check of Carcasses to spell without errors.