<span>the answer is "a board game of strategic skill for two players, played on a chequered board on which each playing piece is moved according to precise rules. The object is to put the opponent's king under a direct attack from which escape is impossible"</span>
The amount of electrons and energy levels.
I hope this helps:)
OK so basically as we age are muscles and bones tend to become weaker and as that happens injuries may occur more often and usually we can no longer heal fully/properly because our bodies can no longer keep up with the injury.
The answer is C, Calcitriol. :)
