Unit10

A. fancy B. gentle C. marine D. plastic

• A

• B

• C

• D

1. In the past hundred years, biodiversity around the world has decreased dramatically. Many species have gone extinct. Extinction is a natural process; some species naturally die out while new species evolve. But human activity has changed the natural processes of extinction and evolution. Scientists estimate that they are dying out at hundreds of times the natural rate.

2. A major reason for the loss of biodiversity is that natural habitats are being destroyed. The fields, forests, and wetlands where wild plants and animals live are disappearing. Land is cleared to plant crops or build houses and factories. Forests are cut for lumber and firewood. Between 1990 and 2005, the amount of forested land in Honduras, for instance, dropped 37 percent.

3. As habitats shrink, fewer individuals can live there. The creatures that survive have fewer breeding partners, so genetic diversity declines.

4. Pollution, overfishing, and overhunting have also caused a drop in biodiversity. Global climate change - the latest rise in the average temperature around the globe, linked to human activity - is also a factor. Warmer ocean temperatures damage fragile ecosystems such as coral reefs. A single coral reef can shelter 3,000 species of fish and other sea creatures such as clams and sea stars.

What is the main reason for the loss of biodiversity mentioned in the passage?

A. natural processes of extinction and evolution B. pollution, overfishing, and overhunting

C. global climate change D. destruction of natural habitats

• A

• B

• C

• D

a. Environmental protection is essential for the health of our planet and its inhabitants.

b. It helps to reduce pollution and climate change, which are two of the most pressing issues facing our world today.

c. Therefore, it is important for everyone to do their part to protect the environment.

d. Environmental protection can also help to protect our natural resources, such as air, water, and land.

e. These resources are essential for our survival and well-being, and we must do everything we can to protect them.

19. A. a – b – d – e – c B. a – b – c – d – e C. a – e – d – c – b D. d – a – b – e – c

• A

• B

• C

• D

There are many factors that contribute to_________ and climate change.

A. global warming B. greenhouse C. footprint D. wildlife

• C

• A

• D

• B

Even though Vietnam's land size is only slightly more than 330,000 square kilometres, the country (20)__________, including marine, wetland, and terrestrial ones.

Urban areas, farms, and forests make up terrestrial ecosystems. Among them, woods are distinguished by a high degree of rainfall and temperature, (21)_________, typical of the tropical monsoon climate. (22)_______is a tropical evergreen forest because the country is (23)________. Ecosystems are primarily artificial and less diverse in agricultural and urban settings.

Vietnam has a wide variety of wetland ecosystems, each with unique characteristics (24)________. Vietnam's wetland ecosystems include coral reefs, lagoons, peat swamps, coastal mangroves, and the ocean surrounding islands on the shore. Numerous native and migratory animal species, including birds, mammals, amphibians, and reptiles, (25)_________. A variety of aquatic creatures, including fish, prawns, crabs, and others, call these home. Peat bogs are unique to the continent of Southeast Asia.

22. A. The predominant of Vietnam’s environment B. Vietnam's predominant environment

C. The environment of Vietnam’s predominant D. Vietnam's predominantly environment

• B

• C

• A

• D

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

• A

• C

• B

• D

Even though Vietnam's land size is only slightly more than 330,000 square kilometres, the country (20)__________, including marine, wetland, and terrestrial ones.

Urban areas, farms, and forests make up terrestrial ecosystems. Among them, woods are distinguished by a high degree of rainfall and temperature, (21)_________, typical of the tropical monsoon climate. (22)_______is a tropical evergreen forest because the country is (23)________. Ecosystems are primarily artificial and less diverse in agricultural and urban settings.

Vietnam has a wide variety of wetland ecosystems, each with unique characteristics (24)________. Vietnam's wetland ecosystems include coral reefs, lagoons, peat swamps, coastal mangroves, and the ocean surrounding islands on the shore. Numerous native and migratory animal species, including birds, mammals, amphibians, and reptiles, (25)_________. A variety of aquatic creatures, including fish, prawns, crabs, and others, call these home. Peat bogs are unique to the continent of Southeast Asia.

23. A. making up primarily of highlands and hills B. made up primary of highlands and hills

C. making up primary of highlands and hills D. made up primarily of highlands and hills

• C

• A

• B

• D

Go EcoTourism: Adventure with Purpose!

• Explore, conserve, and make a (13) ____________ with Go EcoTourism!

• Immerse yourself (14) _______ nature, support local communities, and leave a positive impact.

• Booking at GoEcoTourism.com or calling 1-800-GO-GREEN connects you to (15) ________ eco-friendly adventure.

• Join us today for a purposeful travel experience!

14: A. at B. in C. on D. for

• B

• C

• A

• D

Climate change ________ a significant threat to ecosystems worldwide.

A. poses B. reduces C. enhances D. ignores

• A

• B

• D

• C

Even though Vietnam's land size is only slightly more than 330,000 square kilometres, the country (20)__________, including marine, wetland, and terrestrial ones.

Urban areas, farms, and forests make up terrestrial ecosystems. Among them, woods are distinguished by a high degree of rainfall and temperature, (21)_________, typical of the tropical monsoon climate. (22)_______is a tropical evergreen forest because the country is (23)________. Ecosystems are primarily artificial and less diverse in agricultural and urban settings.

Vietnam has a wide variety of wetland ecosystems, each with unique characteristics (24)________. Vietnam's wetland ecosystems include coral reefs, lagoons, peat swamps, coastal mangroves, and the ocean surrounding islands on the shore. Numerous native and migratory animal species, including birds, mammals, amphibians, and reptiles, (25)_________. A variety of aquatic creatures, including fish, prawns, crabs, and others, call these home. Peat bogs are unique to the continent of Southeast Asia.

24.

A.depending on the climate and geographic location B. depend on the climate and geographic location

C. which depends on the climate and geographic location D. that depends on the climate and geographic location

• D

• B

• C

• A