1. Which of the following aquatic animals is a fish?   Leech   Newt   Elver   Hint Half-n-half Clue   2. A home for _______ is known as a vivarium.   ants   reptiles   fish   Half-n-half Clue   3. The tiny plants that small water animals feed on are known as _______.   aorta   diatoms   plankton   Half-n-half Clue   4. The useful work of the bees in gardens is to _______.   aerate the soil   pollinate the flowers   feed on the greenfly   Half-n-half Clue   5. The salmon belongs to which of the following classes of vertebrates?   Amphibians   Fish   Mammals   Half-n-half Clue   6. The turtle belongs to which of the following classes of vertebrates?   Fish   Amphibians   Reptiles   Half-n-half Clue   7. The lungs _______ when the diaphragm rises.   expand   inflate   contract   Half-n-half Clue