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