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5th-6th Grade Science Chapter 8 Review- Changes In An Ecosystem- Part 2
Test Description: Chapter 8 Review- Changes in an Ecosystem
Instructions: Answer all questions to get your test result.
1) Plant and animal species that originally live in an ecosystem are called ___.
A
invasive species
B
extinct species
C
native species
D
endangered species
2) Any physical hazard to life caused by having too much or too little of things need for life is called a ___.
A
disaster
B
stress
C
cycle
D
monsoon
3) True or False: All stressors on a ecosystem are caused by people.
A
Jasmine
B
False
C
True
D
Aladdin
4) Which of the following is NOT a relationship with the ecosystem that Christians should have?
A
Manage and take care of the ecosystem.
B
Make efforts to replenish or regrow the resources we use.
C
Protect living things in an ecosystem.
D
Use every resource until it is gone, since God has given man dominion over the earth.
5) How is a drought different from other natural disasters?
A
It is God-pleasing, and other natural disasters are not.
B
It does not have a definite beginning or ending.
C
It has a definite beginning and ending.
D
It is not God-pleasing, and other natural disasters are.
6) Which of the following are NOT ways people can reduce the effects of stresses on an ecosystem?
A
setting aside wildlife refuges or national parks
B
replanting trees
C
eliminating limits on hunting and fishing
D
adding fish ladders to dams
7) After coming back from an overseas trip, a passenger bring a potted plant that an airline inspector will not let them keep. Why might this be the case?
A
Someone on the plane might be allergic to the plant.
B
Inspectors don't want people to have nice things.
C
The plant could use up all of the oxygen on the plane.
D
The plant may be an evasive species that could cause harm to ecosystem.
8) What of the following is NOT a problem that invasive species can bring to an ecosystem?
A
decreased competition for water
B
increased competition for food
C
diseases
D
increased number of predators
9) People and animals breathe in oxygen and breathe out carbon dioxide during ____.
A
respiration
B
the carbon cycle
C
the nitrogen cycle
D
hurricanes
10) Bacteria that can change nitrogen into compounds can be found in ___ nodules on plants.
A
stem
B
leaf
C
petal
D
root
11) During respiration organisms use ___ molecules and oxygen to produce energy.
A
root
B
respiration
C
sugar
D
carbon dioxide
12) A regular pattern of change is called a ____.
A
cycle
B
stressor
C
system
D
monsoon
13) The water cycle includes precipitation, transpiration, ____, and condensation.
A
transportation
B
elevation
C
evaporation
D
respiration
14) The year is divided into ____, one of earth's cycles.
A
cycles
B
temperatures
C
precipitation
D
seasons
15) What is the role of decomposers in the carbon cycle?
A
Decomposers break down wastes and the bodies of dead things, returning carbon dioxide into the environment.
B
Decomposers take in carbon dioxide and release oxygen.
C
Decomposers take in oxygen and releases carbon dioxide into the air and waste into the soil.
D
Decomposers provides energy for the plants to make food.
*select an answer for all questions
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