A question found in a CK-12 workbook on Biology… “___ 2. The main distinguishing feature of vertebrates…

A question found in a CK-12 workbook on Biology…

"___ 2. The main distinguishing feature of vertebrates is their backbone."

Which would make most politician non vertebrates?

CK-12 Biology Workbook

CK-12 Biology Workbook complements its CK-12 Biology book.

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This entry was written by tomwsmf, posted on December 25, 2011 at 1:06 am, filed under Uncategorized. Bookmark the permalink. Follow any comments here with the RSS feed for this post. Both comments and trackbacks are currently closed.