A group of scientists followed a set of steps designed to detect metals found in different sources of drinking water. The steps are shown out of order. Arrange the steps so that they correctly describe the investigation as the scientists should have performed it.

Conclude which, if any, of the
water samples have unsafe
levels of metal.

Measure the amounts of metals
in each sample and record the
amounts in a table.

Predict whether or not water
sources near a manufacturing
plant are contaminated.

Collect the water samples.