Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
The variable that stays the same in an experiment is called the controlled variable
Hope this helps
Cells divide in asexual reproduction!
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I don't know but I think that 0.02 g/mL is 20 g/L because you multiply the 0.02 by a 100. That's how you get the Gram liter
