Answer:
I'm not 100% sure but I'm positive the answer was or is Methane, correct me if I'm wrong!
In humans, tongue rolling is dominant to the inability to tongue roll. The chances a child will be a non-tongue roller is C. 0.5.
Answer:
11. True 12. True 13. False 14. True 15. True 16. True 17. True 18. False
19. True 20. not sure
Idk why there's too many true