Look at the map of the world on page 39. Make some observations by continent. Can you explain anything you notice?

The bottom part thats where most farming goes on

Answer cratons

I'm pretty sure that the answer is c.

Conditions are more like living on  land  for creatures in the upper part of the intertidal, which is only covered with  water  at extreme high tide, so life is easier on land. conditions are more like living in the ocean for creatures in the lower part of the intertidal which is only exposed to air at extreme low tide. so basically it both worlds of land and ocean.