Hi Ace22704,
Answer - natural observation
I think this experimental method is a better option because its in a natural environment where the kids dont know whats happening unlike the suveys where you ask them questions which is probably a bad idea because they might feel scared and just change their minds.
I believe it is nephropathy which can lead to kidney failure and death.
B is answer because ewe have glands that produce hormones in our body.
Both in aerobics and dancing there is a lot of excercise going on...like salsa dancing, ballet, and break dancing...you use a lot of muscles jumping, twirling, and repetitions.
Answer:
Simply drinking less or no water
