Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates Cartilaginous skeleton, unpaired fins Notochord remains throughout life Some are parasitic…
Turn over Paper Reference W39941A ©2012 Pearson Education Ltd. 4/3 Geography Advanced Unit 3: Contested Planet ADVANCE INFORMATION June 2012 6GE03/01 *W39941A* Edexcel…