test chp 7 guide by laz

ocean

An arctic ecosystem depends almost entirely on---------- for uts available food

the mixing action of river water and ocean water

An estuary functions are as a mineral trap due to

Bentos

Barnacles are type of-------- ,or bottom-dwelling, organism

slowly

Downstream, a river often widens and flows more -----------------.

Runoff

Excessive nutrient growth in an aquatic ecosystem can be accelerated by------------------

Benthos

Fish are a type of-----------or free-swimming, organisms

snow met

Many rivers originate from -----------in mountains

Salinity

The amount of dissolved salts in water in known as--------------

amount of nutrient and sunlight that are available

The arrangement of organisms in the open ocean is determined by the

shallow, coastal waters

The majority of marine organisms are found in

wider, warmer, and slower ( all of the above)

as they flow down a mountain to flatter ground rivers generally become

the secretion of calcium carbonate by tiny marine animals

coral reefs are intricately shaped rocklike structures that are formed as a result of

Barries

long thin--------island typically run parallel to ashore

Rhizoids

mosses use--------------to anchor themselves to rocks near churning river headwater

Land

most ocean pollution can be traced to activities on -------------

Phytoplankton

most of the food in aquatic ecosystems is produced by---------------

brackish

the water in salt marshes in salties than the water in ---------- marshes

phytoplankton and zooplankton

two types of plankton are microscopic plant called----------------- and microscopic animals called-----------------

quickly

upstream, a river is usually cold and flows ----------through a shallow riverbed

river and streams

what are the two mains type of freshwater wetland

River generally move faster and their oxygen level decrease as they near the ocean

which of the following statements is not correct

littoral

The type of organisms found in a pond or lake depend on

Nekon

Three groups of aquatic organisms include plankton,-----------and benthos

all of the above

Two threats to ocean ecosystems are

increase runoff

Which of the following is not an environmental function of wetland

phytophankton

Which organism produces most of the food in an aquatic ecosystem

There are not enough sunlight

Why doesn't photosynthesis occur in deep ocean water

absorb

because water ------------ sunlight, photosynthesis is limited to the upper 100 meters of the ocean

warm

coral live only in shallow ------------- water where there is enough light for photosynthesis

limestone

coral polyps secrete skeletons of ----------- that slowly accumulate and form coral reefs

rivers and oceans

estuaries are very productive ecosystems because they receive fresh nutrients from