Because they are able to resist erosion by wind, water and weather much longer than softer rocks.
No, igneous rocks are harder than sedimentary rocks on average.
no, teeth are harder than rocks
Because they are harder and last longer.
Flicker Rocks Harder was created on 2004-05-04.
Drying meat and seafood makes it harder for harmful bacteria to grow.
No no no no no never big red rocks
It makes you harder and also you last for longer
The rocks are underground so intrusive rocks are under pressure so its harder.
It would just last longer between charges.
Only a few days but the harder you bite down the longer it hurts
It can last. The age difference does make it harder. Keep in mind that woman live on average seven years longer then men
Well if you really want it to last longer I guess you could just say "FASTER" or "HARDER". You could also holdon to him/her. You can also moan louder. If your a girl just give him a bj (blow job) it's that simple.