How far do you understand the passage???
Task 1: 2) Thanks to modern technology, scientists have been able to________ the life of plants and animals that live under the sea.
investigate
Task1: 4)________ is a term that refers to the existence of different kinds of animals and plants which make a balanced environment.
Biodiversity
Task 2: 3) What can submarines do to help scientists know about the undersea world?
They send submarines to investigate the seabed and bring samples of marine life back to the surface for further study.