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<h2>
The seagull's approximate height above the ground at the time the clam was dropped is 4 m</h2>
Explanation:
We have equation of motion s = ut + 0.5 at²
         Initial velocity, u = 0 m/s
         Acceleration, a = 9.81 m/s²  
         Time, t = 3 s      
      Substituting
                       s = ut + 0.5 at²
                       s = 0 x 3 + 0.5 x 9.81 x 3²
                       s = 44.145 m
The seagull's approximate height above the ground at the time the clam was dropped is 4 m