@ cabila gửi bn

NHỚ VOTE CHO MIK 5*+ CTLHN NHA

1.a. seventy five percent is covered by sea and ocean

2.b.by using modern devices(they now overcome the challanges of the depth by using modern devices)

3.b.they bring samples of marine life back to the surface for further study(they investigate the seabed and bring samples of marine life back to the surface for further study)

4.c.(là sự thật không cần giải thích)

5.b( the marine life would be at stake if the sea biodiversity was not maintained

1, A. seventy five percent

2. B. By using modern devices

3. C. Both a and c

4. C. We can know a wide range of information,including water temperature , depth and the sea populations

5. B. Marine life would be at stake