Every beach has scenic rolling hills in the back with grass growing out of them, the sand dunes. Some can even grow up to 40 feet high. These sandy heaps act as homes to many different animals like ghost crabs and nesting areas for birds. The dunes stretch all along down the beach, but how did they get there, how do they not fall right over and how can grass grow out of sand?
Embryo dunes then turn into secondary dunes, which are larger, have taller grass and host many generations of root systems below the surface. Due to secondary dunes being bigger, they break the wind coming from the water and catch any sand blowing around.
Grass roots beneath the sand form a long, tangled network called rhizomes which hold down the sand and keep the dune in place.
“I liked how we got to experience science happening around us instead of learning it from a textbook,” Sophia said, a junior from Owen J. Roberts.