Mara wants to test the porosity (the space between the particles) of some soil from her yard. She does that by comparing the porosity of the soil with the porosity of sand and gravel by measuring how much water fit in a jar with the same amount of each material. She sets three identical jars on the counter. She puts a half cup of sand in one jar, a half cup of gravel in the second jar, and a half cup of her soil in the third jar. three jars, one with sand, one with gravel, and one with soil Make a prediction about how much water can fit in each jar. Which sample will hold the most water? Write down your predictions on the porosity of all three samples.