1. Fastest fish   Eel   Bluefin Tuna   Cosmopolitan Sailfish   Shark   Swordfish   Hint Half-n-half Clue   2. Heaviest bird of prey   Andean Condor   Kori Bustard   Peregrine Falcon   Bald Eagle   Great Bustard   Half-n-half Clue   3. Largest land animal   Rhinoceros   Lion   Hippopotamus   Giraffe   Elephant   Half-n-half Clue   4. Longest cells in the human body   Megakaryocyte (blood cells)   RBC   Brain Cells   WBC   Nerve Cells (Neurons)   Half-n-half Clue   5. Largest mammal   Blue Whale   Hippopotamus   Elephant   Rhinoceros   Giraffe   Half-n-half Clue   6. Fastest growing plant   Coconut   Ferns   Bamboo   Palm   Banyan   Half-n-half Clue   7. Heaviest internal organ in the human body   Pancreas   Liver   Stomach   Large intestine   Heart   Half-n-half Clue