-Number of cool receptors in the square -Number of warm receptors in the square

-What is the ratio of blue to red (cold/ warm receptors) in te square?

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in