As a couple of people have pointed out, human hearing ranges from 10 Hz to 10,000 Hz, but as people get older and as they damage their hearing by listening to very loud music, firing guns without ear protection, working in very noisy environments or having other physical damage, that upper end drops off. At 64 yrs old, with a long history of a target shooter before we thought about ear protection, and after many years as a rock and roll disk jockey.<span>
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1. humans cant live without water
2. dolphins use up to 20% of their cerebral cortex
3. vikings were the first to inhabit dogs (wolves)
4. tom brady now has 5 superbowl rings
5. im black
6. whales are capable of ejaculating up to speeds as fast as a 12 gauge shotgun, under water
7. sharks have to keep swimming or they'll sink. this is why they swim mostly in shallow areas
8. my high school orchestra is the oldest public highschool orchestra in the whole united states, here in winfield kansas
9. I love my mother
10. she loves me as well
11. a roach can live up to 3 weeks without its head
12. trees are made out of wood
13. to find the line of symmetry on a parabola you use -b/2a
14. animals give birth
15. reptiles lay eggs
16. frogs are neither male nor female
17. Eminem is the rap god
18. my dad has diabetes
19. it is impossible to scratch a diamond with your fingernail
20. Bob's Bugers is the best show on adult swim <span />
The answer is rings, I know this because i took a test about it and I got it right
