5.1 The Open Ocean

Question 1

Bioluminescence

Answer 1

The biochemical release of light by living organisms

Question 2

World Ocean

Answer 2

The combination of all major oceans into one large, interconnected body of water that encircles the world’s continents

Question 3

Epipelagic Zone

Answer 3

The zone of the ocean between 0and 200 m deep which receives enough light for photosynthesis

Question 4

Mesopelagic Zone

Answer 4

The zone of the ocean between 200 and 1000 m deep which receives very little light

Question 5

Bathypelagic Zone

Answer 5

The zone of the ocean between 1000 and 4000 m deep which receives no sunlight

Question 6

Abyssopelagic Zone

Answer 6

The zone of the ocean between 4000 and 6000 m deep with near-freezing water temperatures and intense pressure

Question 7

Benthic Zone

Answer 7

The lowest depth region in any body of water including the surface of the substrate

Question 8

Benthos

Answer 8

The community of organisms found in the benthic zone

Question 9

Ecosystem Services

Answer 9

Benefits people obtain from ecosystems, including food, flood regulation, climate control and water purification

Question 10

Carbon Sink

Answer 10

A natural environment that absorbs carbon dioxide from the atmosphere faster than it releases it