C Write the letter of the correct answer on the space provided for 16. and exploitation are the most prevalent problems affecting the coral reefs in the Philippines A Destructive Fishing B. Pollution C. Continues logging D. Forest Floor 17. Which method that result to reduced fish population, destruction of coral reefs and loss of fish diversity A Soil erosion B Overfishing C. illegal logging D. Siltation 18. Which of the following caused by over collection of corals and shells, dynamite fishing, fine net fishing, oil spills and off shore oil drilling. A. Destructive Fishing C. Destruction of Marine Ecosystem B. Pollution D. Continues logging 19. The eroded soil particles that settle on river banks and beds damage the river ecosystem severely, they pollute the river and suffocate organisms. A. Soil erosion B. Overfishing C. illegal logging D. Siltation _.-20. Who are responsible for the condition of ecosystems? A. Humans B. Animals C. Tress D. none of the above
