Author Question: What do most deep water consumers depend on for survival? a. The productivity of the water column ... (Read 72 times)

leo leo · **on:** Aug 22, 2018

What do most deep water consumers depend on for survival?
a. The productivity of the water column above
b. Chemosynthetic productivity
c. The deep scattering layer of nutrients
d. Rift communities

Question 2

What describes a fish species with a narrow tolerance of temperature changes?
a. Stenohaline
b. Eurythermal
c. Stenothermal
d. Euryhaline

akudia · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: A
There is no photosynthesis occurring in the deep water because of the permanent darkness. For the
most part, consumers rely on the biological activity above them for nutrients. There are some areas
where chemosynthesis is also occurring. Information can be found in the section Examples of Marine
Communities

Answer to Question 2

ANS: C
Steno translates to mean narrow. Stenothermal organisms have a narrow tolerance of temperature
changes. Many tropical species are stenothermal and function better in heated environments.
Information can be found in the section Understanding the Ocean Began with Voyaging for Trade and
Exploration.