Do plants need soil to grow essays

Do plants need soil to grow essays PROBLEM: Are plants able to live in an environment without the seemingly essential nutrients of soil? HYPOTHESIS: Seeing as how certain plants can grow only in certain soils, it seems unlikely that any seeds would mature to a full healthy adult. Assembled three cups with the proper soil (none, gravel, and topsoil) Placed seeds in the cups (5 each to make sure at least a few of them sprout) Placed 30 milliliters of water in all three cups (the amount of water will be the same and consistent throughout the experiment) Removed seeds that didn't sprout in 5 days Checked each seed for growth with ruler each day and recorded data Added 5 milliliters of water each day Average growth per day for the plants with no soil, gravel, and topsoil is (in that order): Day No Soil (Height in cm) Gravel (Height in cm) Top Soil (Height in cm) ...