Guide Questions:
1. What human activities may lead to imbalance in ecosystems?
2. How do human activities affect the balance of the ecosystems?
3. What natural events lead to the imbalance of ecosystems?
4. How do natural events affect the balance of the ecosystems?
5. Recently, Taal volcano erupted resulting to the changes of the surrounding
ecosystems. How does this affect the population of plants and animals in the
area?