1. Which of the following helps keep body cool?   Respiration   Mastication   Perspiration   Urination   Hint Half-n-half Clue   2. Which of the following are known as "pisces"?   Reptiles   Fish   Mammals   Birds   Half-n-half Clue   3. How is the age of a tree determined?   By measuring its girth   By counting the number of its branches   By counting the annual rings in a cut trunk   By measuring its height   Half-n-half Clue   4. What forms after the flowers have pollinated?   Thorns   Fruits   New Branches   Leaves   Half-n-half Clue   5. What is the name given to the green pigment in plants?   Tendrils   Starch   Stomata   Chlorophyll   Half-n-half Clue   6. What is the pulse rate of an average healthy human being?   100 beats per minute   16 beats per minute   65 beats per minute   72 beats per minute   Half-n-half Clue   7. Fish breathe through   Fins   Skin   Gills   Lungs   Half-n-half Clue