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Ecologist At Work (Science)
Test Description: To help you review the science concepts learned during the unit on “The Environment”.
Instructions: Answer all questions to get your test result.
1) Wildlife is continuously decreasing. What is the main reason of this?
A
destruction of habitat
B
hunting
C
cutting down of forest
D
predation
2) Which is the most endangered species?
A
The blue whale
B
The Alaskan bear
C
The ivory-billed woodpecker
D
The Asian elephant
3) The most important human activity, leading to the extinction of wildlife is:
A
pollution of air and water
B
road construction
C
hunting for valuable wildlife products
D
alteration and destruction of natural habitats
4) If we uncover half of the forest, covering the earth, what crisis will be produced at most and at first?
A
the remaining half of the forests will maintain this imbalance
B
some species will be extinct
C
energy crisis will occur
D
population and ecological imbalance will rise up
5) Which group of vertebrates comprises the largest number of endangered species?
A
reptiles
B
fish
C
birds
D
mammals
6) In a large grassland ecosystem, the largest population is that of
A
consumers
B
omnivores
C
herbivores
D
producers
7) In a population, the following occurs if the number of birth equals the number of deaths
A
under population growth
B
zero population growth
C
increasing population growth
D
decreasing population growth
8) Which of the following is a type of predator
A
deer
B
grasshopper
C
lion
D
whale
9) A community and its physical environment together is a(n)
A
ecosystem
B
niche
C
habitat
D
population
10) A gradual change in an ecosystem which could occur over hundreds of years is
A
mutualism
B
succession
C
invasion
D
gradualism
*select an answer for all questions
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