Yes, as scientists could figure out what might have changed in the variables she used. Brainliest me and I can give you the whole system.
The first one, cause their trying to make it a positive way to reinforce. Which just means their trying to fix something again
they measure tremors and pressure. also, where are the options?
Answer:
You could use a magnet to collect the iron, and then wash the sawdust off. Hope this helps :)
