Which is likely true of the aphotic zone in the ocean?

Rip currents occur where longshore currents diverge.

A wave has a wavelength of 150 meters.  The celerity of the wave is 10 meters/second.  The height of the wave is 5 meters.  The depth of the water is 100 meters.  What is the period of this wave?

Neap tides cause the lowest tides each month.

Where would you most expect to find large populations of zooplankton?

In chapter 9 we talked about two marine examples of keystone species. List one of these examples and in 2-3 sentences explain how that species impacts the biodiversity of its habitat. 

A broad, shallow continental shelf tends to slow down the movement of the rotary tidal wave.

The Gulf stream that is a part of the North Atlantic gyre is deeper, narrower, and faster-moving than the portion of the gyre near Europe.  The reason for this difference is:

Which of the following is true of “chaotic seas”?

In chapter 9 we talked about two marine examples of keystone species. List one of these examples and in 2-3 sentences explain how that species impacts the biodiversity of its habitat.