Composition of Seawater
What is the most abundant salt in the ocean?
sodium chloride
What organism drifts in the water?
Plankton
What is the rate that producers make their own food?
Prodctivity
A Polar Ocean has ____nutrients and ____ sunlight.
high/low
What is the process where sunlight is turned into glucose?
Photosynthesis
What is salinity measured in?
parts per thousand
What organism make their own food?
Phytoplankton
What are the two factors of productivity?
nutrients and sunlight
A Tropical Ocean has _____ nutrients and _____ sunlight.
low/hight
Peak productivity in Polar Oceans is in the
Spring
What is mass per unit volume?
density
Which organism swims freely?
Benthos
What is a food chain?
linear transfer of energy
A Temperate Ocean has ______ nutrients and sunlight.
equal/middle
Productivity is limited by what two factors?
nutrients and sunlight
What is the layer where water temperature changes?
Which organism lives on the ocean floor?
Benthos
What is a food web?
complex, multiple pathways, provide organisms with alternative food sources
Which type of Ocean would have the most sea plants?
Temperate
What is the range of salinity in the open ocean surface waters?
33-37 parts per thousand.
What three processes decreases salinity?
Run off, precipitation, sea ice melting
What are the three denisty zones?
mixed, deep, transition
What brings nutrients up from the ocean floor?
Upwelling
Which ocean would have the least sea plants?
What is the principal source of water in oceans?
Water is released from the Earth's interior.