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 following questions. When corals are mentioned, many people think of rock-life forms in the sea filled with colorful fish. But corals are made up of hundreds of thousands of small organisms which live and feed like any other sea life. For the past five years, researchers in Hawaii and Australia have been engineering corals inside a lab to see if they could better resist ...
Nguyễn Thanh Thảo | Chat Online | |
06/09/2024 06:41:54 (Tiếng Anh - Lớp 12) |
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 following questions.
When corals are mentioned, many people think of rock-life forms in the sea filled with colorful fish. But corals are made up of hundreds of thousands of small organisms which live and feed like any other sea life. For the past five years, researchers in Hawaii and Australia have been engineering corals inside a lab to see if they could better resist the effects of climate change. They say it is now time to see how their creations perform in nature. The scientists say climate change linked to human causes has led to warming oceans that can harm sea life. They say if the more heat-resistant corals they developed do well in the ocean, the method can be used to help save suffering and dying reefs. The team tested three methods for making corals that would be strong and healthy in nature. One was the method of selective breeding. This method involves scientists choosing parents with desirable characteristics for reproductive purposes. A second method subjected the corals to increasing temperatures to condition them to be able to survive in warm ocean environments. The third involved making changes to the algae that provide corals with necessary nutrients. The leader of the project, University of Hawaii researcher Kira Hughes, said all the methods proved successful in the lab. She told The Associated Press that some scientists might worry that such methods go against the natural processes of nature. But with the planet continuing to warm more and more, she does not see any better options. "We have to intervene in order to make a change for coral reefs to survive into the future," Hughes said. When ocean temperatures rise, corals release algae that supplies nutrients and gives them color. This causes them to turn white, a process called bleaching. When this happens, corals can quickly become sick and die. But for years, scientists have been observing corals that have survived bleaching, even when others have died on the same reef. They are now centering on those healthy survivors and hoping to further increase their resistance to heat. Those corals were used as the parents for the newly created kinds. (https://eamingenglish.voanews.com)
What is the main idea of the passage?
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. Scientists have created corals in lab to better resist climate change. 0 % | 0 phiếu |
B. Bleaching, a process where coral reefs turn white and die. 0 % | 0 phiếu |
C. There are many causes leading to climate change and loss of coral reefs. 0 % | 0 phiếu |
D. A new kind of algae helps to bring more nutrients for corals. 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- 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 following questions. Online shopping is no longer just a fad, it’s a lifestyle. People everywhere are taking advantage of ... (Tiếng Anh - Lớp 12)
- 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 following questions. Online shopping is no longer just a fad, it’s a lifestyle. People everywhere are taking advantage of ... (Tiếng Anh - Lớp 12)
- 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 following questions. Online shopping is no longer just a fad, it’s a lifestyle. People everywhere are taking advantage of ... (Tiếng Anh - Lớp 12)
- 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 following questions. Online shopping is no longer just a fad, it’s a lifestyle. People everywhere are taking advantage of ... (Tiếng Anh - Lớp 12)
- 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 following questions. Online shopping is no longer just a fad, it’s a lifestyle. People everywhere are taking advantage of ... (Tiếng Anh - Lớp 12)
- He is writing a letter of acceptance to the employer with the hope to get his favorite position in the company. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the questions. She's a bit down in the dumps because she has to take her exam again. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C or D on the answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following sentences. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C or D on the answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following sentences. (Tiếng Anh - Lớp 12)
- _______and food- related industries and services provide over 44 million jobs in the EU, including regular work for 20 million people within the agricultural sector itself. (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Câu nào dưới đây không đúng với doanh nghiệp độc quyền: (Tổng hợp - Đại học)
- Đối với người tiêu dùng thì biện pháp điều tiết độc quyền nào của chính phủ mang lại lợi ích cho họ: (Tổng hợp - Đại học)
- So với giá cả và sản lượng cạnh tranh, nhà độc quyền sẽ định mức giá …… và bán ra số lượng ..... (Tổng hợp - Đại học)
- Một doanh nghiệp độc quyền thấy rằng ở mức sản lượng hiện tại, doanh thu biên bằng 5 và chi phí biến bằng 4. Quyết định nào sau đây sẽ làm tối đa hóa lợi nhuận (Tổng hợp - Đại học)
- Giả sử một công ty độc quyền có MR = 2.400 - 4Q và MC = 22, doanh thu sẽ đạt tối đa khi sản xuất sản lượng: (Tổng hợp - Đại học)
- Trong ngành độc quyền hoàn toàn, doanh thu biện (MR): (Tổng hợp - Đại học)
- Yếu tố nào sau đây được xem là rào cản của việc gia nhập thị trường: (Tổng hợp - Đại học)
- Phân biệt giá cấp một: (Tổng hợp - Đại học)
- Nếu phân biệt giá cấp một: (Tổng hợp - Đại học)
- Đường cầu sản phẩm của một ngành: Q= 1.800 - 200P Ngành này có LẠC không đổi ở mọi mức sản lượng là 1,5. Giá cả và sản lượng thế nào? Nếu phân biệt giá cấp một: (Tổng hợp - Đại học)