3. cooperate- to work together coerce- compel by force

5. vocal- to speak out vocabulary- words of a language

7. quintuplets- five children born at one birth quintet- group of five

9. Linear-using a line or lines Incline-to lean; to slope

11. Genesis- beginning; origin Generation- individuals born about the same time

13. cursory- running quickly over Cursive- written with a running hand

15. incredulous- not believing distinct- not identical

17. Subtle- difficult to detect, elusive Subterranean- underground