A student cut three potato chips and recorded their masses. He then put one in water, one in a concentrated sugar solution, and one in a dilute sugar solution. After a day he recorded the masses again. His results are tube, Starting mass (g), End mass (g)

A, Starting mass - 1.20, ending mass - 1.45

B, Starting mass - 1.40, Ending mass - 1.21

C, Starting mass - 1.32, Ending mass - 1.32

Which tube (A, B or C) contained:

(i) water

(ii) dilute sugar solution

(iii) concentrated sugar solution

When water freezes, it . contracts expands

9. wind power creates pollution. water air soil noise

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.