imagine you have four food dyes to test A, B, C and D imagine that you are going to investigate which food dye diffuses more quickly a- which variable will you change? b- which variable will you measure? how will you do this? which variables will you keep the same? how many times will you carry out each test? how will you know which dye diffuses the most quickly?

KaterinaReyn    2   20.01.2022 15:12    0