Đọc và trả lời các câu hỏi: Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is when large numbers of species go to the wall in relatively short periods of biological time. There have been five such extinctions, each provoked by cataclysmic evolutionary events caused by some geological eruption, climate shift, or space junk ...
Nguyễn Thị Thương | Chat Online | |
05/09 17:10:17 (Tiếng Anh - Lớp 12) |
Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is when large numbers of species go to the wall in relatively short periods of biological time. There have been five such extinctions, each provoked by cataclysmic evolutionary events caused by some geological eruption, climate shift, or space junk slamming into the earth. Scientists now believe that another mass extinction of species is currently under way - and this time human fingerprints are on the trigger.
How are we doing it? Simply by demanding more and more space for ourselves. In our assault on the ecosystems around us we have used a number of tools, from spear and gun to bulldozer and chainsaw. Certain especially rich ecosystems have proved the most vulnerable. In Hawaii more than half of the native birds are now gone - some 50 species. Such carnage has taken place all across the island communities of the Pacific and Indian oceans. While many species were hunted to extinction, others simply succumbed to the "introduced predators" that humans brought with them: the cat, the dog, the pig, and the rat.
Today the tempo of extinction is picking up speed. Hunting is no longer the major culprit, although rare birds and animals continue to be butchered for their skin, feathers, tusks, and internal organs, or taken as cage pets. Today the main threat comes from the destruction of the habitat that wild plants, animals, and insects need to survive. The draining and damming of wetland and river courses threatens the aquatic food chain and our own seafood industry. Overfishing and the destruction of fragile coral reefs destroy ocean biodiversity. Deforestation is taking a staggering toll, particularly in the tropics where the most global biodiversity is at risk. The shrinking rainforest cover of the Congo and Amazon river basins and such place as Borneo and Madagascar have a wealth of species per hectare existing nowhere else. As those precious hectares are drowned or turned into arid pasture and cropland, such species disappear forever.
(Adapted from Final Countdown Practice Tests by D.F. Piniaris, Heinle Cengage Learning, 2010)
What does the passage mainly discuss? Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. The two ways in which species disappear 0 % | 0 phiếu |
B. Human activity and its impact on a mass extinction of species 0 % | 0 phiếu |
C. Deforestation as a major cause of mass extinctions of species 0 % | 0 phiếu |
D. The tempo of extinction of species today 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- Đọc và trả lời các câu hỏi: Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: Scientists have identified two ways in which species disappear. The first is through ordinary or "background" extinctions, where species that fail to adapt are slowly replaced by more adaptable life forms. The second is ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
- Đọc và trả lời các câu hỏi: When you're abroad, trying to find out who to tip is never straightforward and neither is trying to work out the exact amount. To make things even more complicated, the rules for tipping vary greatly from country to ... (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Theo GS. Trần Ngọc Thêm, ăn, mặc, ở, đi, lại là những yếu tố thuộc thành tố văn hóa nào? (Tổng hợp - Đại học)
- Xác định loại hình kinh tế - văn hóa dựa trên: (Tổng hợp - Đại học)
- Câu tục ngữ: “Giặc đến nhà đàn bà cũng đánh” là biểu hiện của: (Tổng hợp - Đại học)
- Schools are offering educational programs to have children _______ about the importance of conservation. (Tiếng Anh - Lớp 12)
- Bản chất của văn hóa được xem xét trong mối quan hệ: (Tổng hợp - Đại học)
- The more we understand the power of mass media, _______ we can use it for positive change. (Tiếng Anh - Lớp 12)
- Cách xác định các yếu tố cấu thành chỉnh thể văn hóa dựa trên nguyên tắc: (Tổng hợp - Đại học)
- Preserving natural habitats is key to protect biodiversity, _______ ultimately benefits all living things. (Tiếng Anh - Lớp 12)
- ASEAN is a growing and influential organisation that is playing _______ increasingly important role in the world. (Tiếng Anh - Lớp 12)
- Văn hóa thực hiện được chức năng của nó khi nó vận hành với tính cách là: (Tổng hợp - Đại học)