6 is a Number because it helps associate amounts with a number, like 6 items .
Answer:
1 The computer scientists check the database for viruses
2 Nanotechnology is difficult to understand
3 The geologists study the structure and formation of the earth.
4 One is concerned with the question of whether cloning is ethica
5 In the past few years genetic researchers have made incredible strides
6 An international research team is planning a trip to Mars
Answer:
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Explanation: