Enriched Science Chapter 9 Part 2 Question Preview (ID: 39440)
Biomes.
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Decaying organisms fall to the bottom of a pond, lake, or wetland and add nutrients to the water. What is this process called?
a) eutrophication
b) oxygenation
c) nitrification
d) decay supplementation
Which is NOT an aquatic ecosystem?
a) taiga
b) freshwater
c) estuary
d) wetland
As plants in an area undergoing ecological succession die, ________.
a) they are replaced by plants of the same species
b) they are replaced by plants of a different species
c) they are replaced by plants of a different species or they are replaced by plants of the same species
d) no plants grow in their place
What is salinity?
a) the amount of oxygen dissolved in water
b) the amount of pollution in water
c) the amount of salt dissolved in water
d) the speed of the flow of water in a stream
Which of these factors is abiotic?
a) bird
b) frog
c) hawk
d) wind
What is the first species to colonize new or undisturbed land?
a) primary species
b) successive species
c) invasive species
d) pioneer species
Which statement is true of ponds but NOT lakes?
a) Plants surround the shore.
b) Surface water contains organisms that use sunlight for photosynthesis.
c) Sunlight reaches the bottom of the body of water.
d) People fill them in with sediment to create land for houses and other structures.
In the open ocean, where does photosynthesis take place?
a) from the ocean floor to a depth of 1,000 m
b) from 1,000 m to 200 m
c) from 200 m to the surface
d) in all the zones
If you see a wetland with trees growing in it, ________.
a) it is most likely freshwater
b) it is most likely salt water
c) there is no way to predict whether it is freshwater or saltwater
d) it is saltwater and freshwater
Which has higher oxygen levels?
a) faster moving water
b) slower moving water
c) Speed of water has no effect on the oxygen content of the water.
d) All water has the same amount of oxygen.
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