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snow_tiger [21]
2 years ago
8

Sewage is a liquid waste which causes _________ and ________ pollution.

Chemistry
2 answers:
nadezda [96]2 years ago
5 0

Answer:

Lake and River pollution?

Explanation:

Mashutka [201]2 years ago
5 0

Answer:

the one to the right at the end is water waste

Explanation:

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Answer:

Step-by-step explanation:

Alright, lets get started.

Suppose they take t minutes to meet each other.

Distance covered by first friend in t minutes, = 0.2 *t=0.2∗t

Distance covered by second friend in t minutes , =0.15 *t=0.15∗t

Total distance is given as 7, so

0.2 t + 0.15 t = 70.2t+0.15t=7

0.35 t = 70.35t=7

t = 20t=20

means after 20minutes they will meet.

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A change of one unit on the pH scale represents a change in the concentration of hydrogen ions by a factor of 10, a change in two units represents a change in the concentration of hydrogen ions by a factor of 100. Thus, small changes in pH represent large changes in the concentrations of hydrogen ions.

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