IV. True or False. Write T if the statement is correct and F if it is incorrect. 31. An ecosystem is composed of living and nonliving things that interact with one another 32. Coral Reefs serve as the natural habitat and breeding ground of marine organisms. 33. Food chain is a feeding relationship of organisms from producers to consumers 34. Organisms that eat other organisms are called Producers. 35. Collecting corals and shells from the beaches help in the protection of coral reefs. 36. Dumping waste products and pollutants affect the mangrove swamp. 37. Using chemical-based fertilizer is one way of protecting the coral reefs. 38. Using recyclable bags and containers when going to the market or grocery store helps in protecting our ecosystem. 39. Kaingin system helps in preserving the tropical rainforest. 40. People should make endangered species as pets.