They cut the lumber from the land to sell which causes many species of animals to flee. This disrupts the balance of the rainforest ecosystems. Teacher will simulate how environmental disasters disrupt ecosystems. An oil spill in the Atlantic Ocean will disrupt the balance of a South American rainforest. The oil kills sea otters.
Sea otters eat urchins.
Without sea otters to eat urchins, urchin population increases. Urchins feed on seaweed or kelp. The abundance of urchins would graze down the seaweed. The protective habitat of fish is now disturbed. The chain continues.