UNIT 10.

ECOSYSTEM
TEST 1
A. Trắc nghiệm
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the
following questions.
Question 1: The Amazon rainforest is renowned for its incredible _______, housing millions of species
of plants, animals, and insects, many of which are found nowhere else on Earth.
A. conservation B. biodiversity C. deforestation D. exploration
Question 2: Climate change ________ a significant threat to ecosystems worldwide.
A. poses B. reduces C. enhances D. ignores
Question 3: The ______ is a sequence of organisms each dependent on the next as a source of food.
A. water cycle B. food chain C. carbon footprint D. national park
Question 4: The Siberian tiger, due to habitat loss and poaching, is one of the species considered
_____ , highlighting the urgent need for conservation efforts.
A. dangerous B. common C. endangered D. native
Question 5: Pollution from industrial processes contributes to the ______ of natural habitats.
A. destroy B. destruction C. destructive D. destructively
Question 6: A wetland ecosystem provides a unique _______ for a variety of wildlife species, from fish
to birds and mammals.
A. habitat B. challenge C. danger D. background
Question 7: the African elephant is a(n) _______ species that require large land to support it's migratory
habits.
A. native B. endangered C. rare D. organized
Question 8: the blue whale, the largest _______on earth, it's an example of species greatly impacted by
changes in ocean ecosystem.
A. mammal B. habitat C. material D. climate
Question 9: to maintain the balance of our planets ecosystems, it's crucial to engage in the ______ of
natural resources.
A. conservation B. exploitation C. development D. industrialization
Question 10: during our trip, we plan to visit a_______ that is known for its breathtaking landscapes
and diverse ecosystem.
A. rainforest B. sea level C. natural reserve D. food chain
Question 11: the ________ to the earth’s biodiversity is not just an environmental but also a concern for
human health and well-being.
A. disappearance B. threat C. conservation D. experience
Question 12: The new ______ project aims to restore the wetlands and support the return of native
species to the area.
A. ecologically B. ecology C. ecosystem D. ecological
Question 13: The Belize Barrier Reef was described ______ one of the most diverse ecosystems on the
planet, home to thousands of species of sea life.
A. On B. As C. To D. For
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs
correction in each of the following questions.
Question 14: One of the key goals of ecosystem restore is to enhance biodiversity, providing a habitat
for endangered species. A B C
D
Question 15: Many aquatic species are facing the threat of extinction because pollution in rivers and
oceans.
A B C D
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part
differs from the other three in pronunciation in each of the following questions...
Question 16: A. butterfly B. human C. unfortunate D. club
Question 17: A. conservation B. suggestion C. education D. communication
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the
other three in vision a primary stress in each of the following questions..
Question 18: A. fancy B. gentle C. marine D. plastic
Question 19: A. continent B. endangered C. scenery D. tropical
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSET In
meaning to underline word(s) in each of the following questions..
Question 20: Many animals in Arctic are adapted to living in extreme cold environments.
A. Forced B. accustomed C. harmed D. migrated
Question 21: Deforestation has led to the degradation of many natural habitats, affecting both
plant and animal species.
A. improvement B. destruction C. construction D. enhancement
Mark the letter A, B, C, or Don your answer sheet to indicate the word(s) OPPOSITE in meaning to
the underlined word(s) in each of the following questions.
Question 22: Many species have become endangered due to habitat loss, overhunting, and climate
change.
A. protected B. extinct C. secure D. thriving
Question 23: Wetlands are crucial for water purification, acting as natural filters that cleanse the water
of pollutants.
A. insignificant B. important C. necessary D. fundamental
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best completes each
of the following exchanges.
Question 24: Carlos and Sofia are debating the best approach to wildlife conservation in their
environmental science class.
- Carlos: "Shouldn't we prioritize protecting natural habitats to conserve biodiversity?"
- Sofia: “______, Preserving ecosystems is key to maintaining biodiversity and supporting life."
A. I couldn't agree more C. That might not be necessary
B. I couldn't agree with you D. I'm not convinced that the best approach
Question 25: Nina and Tom are discussing their community's effort to reduce carbon footprint.
- Nina: "What if our neighborhood initiated a tree-planting campaign to absorb more CO2”
- Tom: " _______. Trees not only absorb CO2 but also enhance the local ecosystem."
A. I think our neighborhood should stop
B. That's an excellent idea
C. I doubt that would work
D. I think we should consider other options
 Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the
correct answer to each of the questions.
Over the last few decades, the impact of human activity on the Earth's ecosystems has become an
increasing concern among scientists and the public alike. Deforestation, pollution, and climate change
are just a few of the challenges facing the planet's varied ecosystems, from tropical rainforests to coral
reefs.
Ecosystems are complex networks of plants, animals, and microorganisms interacting with their
physical environment. These interactions are critical for sustaining life, providing services such as air
and water purification, pollination of crops, and climate regulation. However, human activities have
altered almost 75% of the Earth's surface, threatening biodiversity and the services ecosystems provide.
One of the most visible impacts is the loss of habitats, leading to a dramatic decrease in biodiversity.
Species extinction rates are now estimated to be 100 to 1,000 times higher than natural background ones.
Conservation efforts are underway worldwide, aiming to protect remaining natural habitats and restore
damaged ones. The success of these efforts is vital not only for the health of the planet but also for
human wellbeing, as we depend on the Earth's ecosystems for our food, water, and air.
Despite these challenges, there is hope. Renewable energy sources, sustainable farming practices,
and conservation initiatives are examples of how we can reduce our impact and help ecosystems recover.
The choices made by individuals, communities, and governments over the coming years will be crucial
in determining the future of the Earth's ecosystems.
Question 26: What is the passage mainly about?
A. The benefits ecosystems provide to human wellbeing.
B. Human activities and their impact on the Earth's ecosystems.
C. The rate of species extinction in modern times.
D. Conservation efforts to protect natural habitats.
Question 27: The word "ones" in the third paragraph refers to
A. impacts B. rates C. habitats D. species
Question 28: According to the passage, what is NOT a service provided by ecosystems?
A. Air purification
B. Pollination of crops
C. Production of fossil fuels
D. Water purification
Question 29: The word "altered "most closely means
A. destroyed B. changed C. covered D. explored
Question 30: Which of the following is true according to the passage?
A. Human activities have had a minimal impact on the Earth's ecosystems.
B. Species extinction rates are decreasing thanks to conservation efforts.
C. Ecosystems play a crucial role in sustaining life on Earth.
D. Most of the Earth's surface remains unaffected by human activities.