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Ecosystem Changes
Test Description: Category 4 Lesson 1
Instructions: Answer all questions to get your test result.
1) _______ is an example of a short-term environmental change.
A
Volcanic Eruption
B
Air Pollution
C
Deforestation
D
Ice Age
2) The rebuilding of an ecosystem after a catastrophic event is called ________ succession.
A
secondary
B
tertiary
C
primary
D
apex
3) Which of the following helps in sustaining or maintaining an ecosystem?
A
succession
B
pollution
C
capacity
D
biodiversity
4) Organisms being able to adapt to their changing environment is a characteristic of _______ environmental changes.
A
short-term
B
long-term
C
microhabitat
D
primary succession
5) In short-term environmental changes organisms that are not able to flee (run away) most likely _____.
A
adapt
B
change
C
live
D
die
6) Primary succession starts with ______.
A
fertile soil
B
rocks
C
grasses
D
small shrubs
7) A flood with rushing water came through an area. What type of plants will most likely survive?
A
plants with many leaves
B
plants with short roots
C
plants with very few leaves
D
plants with long roots
8) When an organism is able to survive a devastating event such as a forest fire, we can infer the organism is better ______ for that situation.
A
advised
B
adapted
C
hidden
D
liked
9) Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?
A
Vines and shrubs that help prevent the erosion of shallow soil
B
Mosses and lichens that can grow on rocky surfaces
C
Conifer trees and tall grasses with roots that loosen the soil
D
Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
10) An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because —
A
there are fewer species to be affected by environmental stresses
B
a greater variety of species present allows more organisms to adapt after changes occur
C
a greater number of plant species means that there is less barren land
D
the transition area between two ecosystems is narrower
*select an answer for all questions
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