Posttest Directions. Read the questions carefully. Choose the letter of the correct answer. 1. Which statements on estuary is INCORRECT? A ft serves as a place for recreational activities. B. It provides food for birds, fish and other wildlife. C. It serves as habitat to different kinds of plants and animals D. It produces sediments and pollutants that pose danger to people. 2. How can you help protect and conserve the estuaries and intertidal zones? A. Contribute to the litter left by tourist. B. Dispose household materials and chemicals properly. C. Use fertilizers and insecticides to help grow healthier plants. D. Support seaside construction of hotels, restaurants and roads. 3. Which poses threat to the estuarine ecosystem? A. decreasing population C. declining water quality B. keeping septic tanks working D. growing native plants + fish 4. Show the interaction of organisms in an estuary using a food web. fish plankton shrimp bird A. bird plankton →shrimp B. shrimp bird → plankton fish C. plankton shrimp fish bird D. fish + plankton shrimp bird 5. Which will NOT help in protecting the estuaries and intertidal zones? A. Dispose household materials and chemicals properly. B. Pour fats, grease or solids down the drain. C. Volunteer in a clean-up drive to pick up trash. D. Conserve water.​