Why have most of the photosynthetic organisms in the ocean evolved to become microscopic phytoplankton? Select all that apply.

Which of the following plankton produce shells made from silica? Select all that apply

Which of the following waves would not be possible because it is too steep?

Match each intertidal zone to the corresponding stressor, or hardship, organisms must contend with. 

On average, which is thicker, oceanic crust or continental crust?

Of the following, where would you expect to find the fastest sedimentation rates?

The Atlantic Ocean is a mature ocean basin that is currently growing wider over time.

The concentration of a pollutant in an organism can increase over time through __________.

Why are nutrient concentrations generally low in most of the surface waters of the tropics?

A long period of incoming swell, such as in the summer, will  _______.