Which affects osteoblast and osteoclast activity?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Did you know that a blue wales tongue weighs more than an elephant?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.