Question

please solve the all questions​

Answer 1

Answer:

12 Ka c

13 Ka d

thinking about you and I don't know what is answer if you know so tell me please I need to get a chance

Answer 2

question 11

-which one of the following is a step in wastewater treatment?

-Answer -

d)All of these

question 12

-Which of the following is are product of waterwaste treatment

-Answer -

c) Both biogas and sludge

question 13

- Nearly all the clocks make use of

-Answer -

d) circular motion

please mark as brainlist