If someone knows how to do biology then pls help

1. D. -6

2. C. 6

3. B. 22

4. B. 36

5. D. 6

Explanation:

I hope this helps!!!

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion