Study

Water Communities

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  • In a river community, crayfish are:
    producers
    decomposers
    predators
    consumers
  • The largest saltwater community is the one found:
    in saltwater oceans and seas.
    near the surface of the ocean.
  • What are the two water communities?
    Saltwater and River
    Saltwater and Atlantic Ocean
    Amazon and Nile
  • A small organism that live in water is a __________.
    bacteria
    germ
    plankton
    organism
  • Which of the following is a true statement?
    Saltwater communities are only found deep in the oceans.
    Saltwater communities are only found near the surface.
    The largest saltwater communities are found in oceans & seas
  • Which animal helps keep the riverbank clean by feeding on the remains of dead fish or other animals?
    Crab
    Alligator
    Crayfish
    Birds
  • A place where an animal or plant naturally lives or grows is their __________.
    home
    habitat
    enviroment
  • How many groups of living things live in the sea?
    3
    4
    6
    5
  • Beaver dams also make ponds which help:
    keep preditors away from the pond.
    keep rivers from getting dirty.
    keep rivers from drying up in dry seasons.
  • The image shows a:
    river community
    saltwater community
  • Why do plants not grow in the bottom of the oceans?
    Plants need warm waters and it is too cold in ocean floors.
    Plants need oxygen and there is none in the ocean floors.
    Plants need sun & sunlight doesn't reach the ocean floor.
  • Beaver dams:
    help hold back flood waters
    cause rivers to dry up
    are harmful to the river community
    are made with rocks and mud
  • In a communities, each living thing has its purpose and place
    False
    True
  • Which of the following are found in saltwater communities?
    All of the above
    Whales
    Plankton
    Squid
  • Through history, people have have used rivers for:
    water, food, and tranportation.
    water, fishing, and swimming.
    water and fishing.
  • Which saltwater animal can swim strongly against the current?
    fish
    starfish
    Fish and Whale
    whale
  • The smallest saltwater communities are found:
    near the surface of the ocean.
    in saltwater oceans and seas.