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kenny6666 [7]
3 years ago
6

You create a system to remove trash and dirt from a lake. Why do you need to test the system? Choose the two correct answers.

History
2 answers:
ikadub [295]3 years ago
8 0

Answer:

b and d or a and b

Explanation:

Yanka [14]3 years ago
3 0
The answer is going to be both letters B and D.
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