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If popping can be heard in the finger, it is possible it is only cracking the air bubbles; however, if popping can be heard as well as the finger causing pain with noticeable swelling, it is likely it is dislocated.
a gray finger sponge cant move or catch there own food so they suck in water and get tiny food particials out of the water so gray finger sponges eat tiny food partials hope that helped.
because the muscles in each finger aren't strong enough to move individually.
no we cant be a wrist and finger spinner in cricket
by you moving ur finger
plates in the earth move and shift, cracking the crust.
crepitation
Your digestion system gives you energy and your finger uses energy to move.
because its rude
URINATE
Most people say cracking knuckles leads to arthritis. It doesn't! I wouldn't recommend cracking your fingers all the time, and I personally don't like cracking fingers in the cold. You can, if you want to, but it hurts. I think the weather of the cold air affects the finger joints which make them stiff and harder to crack. Cracking your fingers also open your joint air holes, so you'll be okay. Cracking fingers are mostly fine to do!!
No you cant but you can use pen...color your finger, get a piece of tape, stick the tape on your finger and remove gently.