What is the intertidal zone? Distinguish between rocky and sandy shores and describe some of the organisms often found on each type of shoreline. What is a barrier island? What is ocean acidification...

What is the intertidal zone? Distinguish between rocky and sandy shores and describe some of the organisms often found on each type of shoreline. What is a barrier island? What is ocean acidification and why is it a threat to coral reefs? Define open sea and describe its three major zones. What is an upwelling and how does it affect ocean life? Why does the open sea have a low NPP? What have scientists recently learned about the ocean’s biodiversity?