ACTIVITY 4. Directions: Read each item carefully. Circle the letter of the correct answer. 1. Which is NOT found in the coral reef ecosystem? A. Fish B. Corals C. Coral reefs D. Trees 2. Which practice causes destruction of coral reef ecosystem? A. Excessive fishing C. Dynamite fishing B. Pollution and oil spil D. All of these 3. Which of the following destroys the balance of an ecosystem? A. Planting more trees C. Disruption of nutrient cycle B. Recycling materials D. Conservation of natural resources​