A highly biological productive ocean surface appears chalky; what plankton is likely successful here?
A) Diatoms
B) Dinoflagellates
C) Coccolithophores
D) None of these choices
Question 2
Waves at the shore will start to break when the ____.
A) water depth is about twice the wavelength
B) crest flattens into a rounded form
C) wave period increases to 15 seconds
D) wave height to water depth ratio is 3:4