Pelagic Zones
As depth increases, light penetration ________.
decreases
More than ______% of the ocean is unknown.
80%
How many of the fish stocks have collapsed due to overfishing?
a third
Another word for salty water is
brine
As depth increases, water pressure __________ while temperature ___________.
increases; decreases
What percentage of the Earth's surface is water?
71%
echolocation
This is known as the arm of the sea
Loch
Which pelagic zone is located at the surface until 200 meters?
Epipelagic or photic zone
The oceans contain what percentage of Earth's total water?
97%
Why are sea otters important to kelp forests?
they keep down the number of sea urchins
Areas that have low oxygen and not much life
dead zones
What is the depth range for the mesopelagic zone?
200 to 1000 meters
What percentage of life is aquatic?
94%
Humpback whales have traveled from where to where to eat herring?
Tropics to Alaska
Use seaway and seacoast in a sentence or two.
Several correct answers possible...need to be checked