Try this project to see how easy it is for pollution to spread through water!
In this experiment, the egg carton represents how bodies of water, such as streams, lakes, rivers, and oceans, are connected to one another. By adding "pollution" (the flax meal and food coloring) into one cup, you showed how easily pollution, like trash, waste, and chemicals, is carried from the place where it is added to bodies of water that could be far away from where the pollution started!
After leaving the egg carton for awhile, the water and pollution (food coloring) started to seep out through the bottom and onto the paper towels. This is an example of how pollution that goes into a body of water can travel further into the ground and pollute areas around a stream or lake as well. This is called groundwater. When groundwater becomes polluted, it can harm plants whose roots soak up the groundwater!
It is important to remember not to litter no matter where you are at, but especially when you are near water, such as at the beach or lake. Pollution, even from garbage such as food wrappers, can be harmful to plants and animals that live in water.
Experiment adapted from this blog.