Question

(f) a sceptical fellow student suggested that the number of bubbles was dropping off as the lamp got further away because the pondweed was dying.

i) how could the student extend the investigation to show that this was not true?

ii) suggest another likely cause for the reduction in number of bubbles, in addition to those already mentioned in (d) and (f)

Answer 1

I wish that i could help but i cant because i dont know how to answer that question