Easy Question. Will mark brainliest Sequence the steps of separating a mixture of sand, salt, and iron filings. Identify which physical property you were using in each step.

Mix the sand and salt mixture with water.
Physical property used:

Boil the salt and water mixture, leaving the salt behind.
Physical property used:

Separate the iron filings from the sand and salt by using a magnet.
Physical property used:

Use filtration to separate the sand from the salt and water.
Physical property used:

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed