1. quadruped   substance that helps propel or push forward.   different form of an element.   tool for pounding or grinding in a mortar.   animal with four feet.   Hint Half-n-half Clue   2. symbiosis   noxious exhalation from swamps and putrid matter.   dependant or small heavenly body revolving round large one.   dependence (of organisms) that is mutually beneficial.   unit for measuring light energy.   Half-n-half Clue   3. slag   residue from smelting operation.   ring (of leaves around the stem).   size or extent.   substance that helps propel or push forward.   Half-n-half Clue   4. quagmire   marsh or soft and wet land.   change or introduction of novelties.   supporting bar in framework or pompous walk.   primary type used as model.   Half-n-half Clue   5. terminology   center of turbulence or whirling motion.   flying reptile now extinct.   sameness or consistency.   terms used in a science or discipline.   Half-n-half Clue   6. prototype   terms used in a science or discipline.   primary type used as model.   speed or rate of motion.   harmless substance given as dummy medicine.   Half-n-half Clue   7. symmetry   pattern with balance or harmony.   noxious exhalation from swamps and putrid matter.   speed or rate of motion.   dependence (of organisms) that is mutually beneficial.   Half-n-half Clue