What is the maximum ocean depth between New Jersey and Portugal in feet

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water