Match each scientist to the observation she is most likely to make

The answer is winds.

That is the correct answer to the question, why is the southern portion of the ring of fire so complex?

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.