Plants and animals will find it difficult to escape from or adjust to the effect of global warming. Scientists have already observed shifts in the lifecycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring. Many species have begun shifting where they live or their annual migration patterns due to warmer temperatures.
With further warming, animals will tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bears and marine mammals in the Arctic are already threatened by dwindling sea ice but have nowhere farther to go.
Projecting species extinction due to global warming is extremely difficult. Some scientists have estimated that 20 to 50 percent of species could be committed to extinction with 2 to 3 Celsius degrees of further warming. The rate of warming, not just the magnitude, is extremely important for plants and animals. Some species and even entire ecosystems, such as certain types of forest, may not be able to adjust quickly enough and may disappear.
Ocean ecosystems, especially fragile ones like coral reefs, will also be affected by global warming. Warmer ocean temperatures can cause coral to "bleach", a state which if prolonged will lead to the death of the coral. Scientists estimate that even 1 Celsius degree of additional warming could lead to widespread bleaching and death of coral reefs around the world. Also increasing carbon dioxide in the atmosphere enters the ocean and increases the acidity of ocean waters. This acidification further stresses ocean ecosystems.
Question 1: Scientists have observed that warmer temperatures in the spring cause flowers to
A. die instantly B. bloom earlier
C. become lighter D. lose color
Question 2: According to paragraph 2, when their habitats grow warmer, animals tend to move_____.
A. south - eastwards and down mountainsides toward lower elevations.
B. north-westwards and up mountainsides toward higher elevations.
C. toward the North Pole and down mountainsides toward lower elevations.
D. toward the poles and up mountainsides toward higher elevations.
Question 3: The pronoun "those" in paragraph 2 refers to _________ .
A. species B. ecosystems
C. habitats D. areas
Hãy luôn nhớ cảm ơn và vote 5*
nếu câu trả lời hữu ích nhé!
`1.` B
- Dẫn chứng : Scientists have already observed shifts in the lifecycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring.
- flowers to bloom earlier = flowers blooming earlier : hoa nở sớm hơn
-> Các nhà khoa học đã quan sát thấy những thay đổi trong vòng đời của nhiều loài thực vật và động vật, chẳng hạn như hoa nở sớm hơn và chim nở sớm hơn vào mùa xuân.
`2.`D
- Dẫn chứng : With further warming, animals will tend to migrate toward the poles and up mountainsides toward higher elevations.
->Với sự nóng lên hơn nữa, động vật sẽ có xu hướng di cư về phía cực và lên sườn núi về những nơi có độ cao cao hơn.
`3.`B
- Dẫn chứng : Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible.
- "those" ở đây thay thế cho " ecosytems"
Hãy giúp mọi người biết câu trả lời này thế nào?
`1. B`
`@` Dẫn chứng: Scientists have already observed shifts...in the spring.
`@` Thì qkht: S`+`has/have`+`V(ed,c3)`+`O...
`2. D`
`@` Dẫn chứng: With further warming, animals will....toward higher elevations.
`@` Thì tlđ: S`+`will`+`V`-`bare...
`3. B`
`@` Dẫn chứng: Species living in... is not possible.
`@` Câu rút gọn: S`+`V`-`ing... → thay thế cho who, which,...
`@` In`+`place/địa điểm: ở nơi nào đó
`giahan27511`
Hãy giúp mọi người biết câu trả lời này thế nào?
Bảng tin
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Nếu bạn có nhu cầu , thì tháng sau vào nheee
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oki
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ý bạn là đầu tháng 6 ấy ạ!
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cảm ơn bạn nha mình sẽ thường xuyên cày cho nhóm ạ!
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cj oiw cj xem xét thử câu này đi ạ https://hoidap247.com/cau-hoi/7064632 e cảm ơn ạ
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dạ , bạn thông cảm. - để tớ nhờ mod Văn xử lí nhaa , cậu cố gắng chờ xíu ạ
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vậy bây giờ tớ vào nhóm đc ko a
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O.o dạ vâg