Sure! Based on the context you've provided, here are suitable phrases to complete the sentences:

1. **harmful effects on**
2. **It is essential**
3. **Another option is**

So the completed sentences will read:

Today, electronic waste (e-waste) is one of the most common types of trash. It includes things like cell phones, televisions, and computers. E-waste is especially a problem in Asia. Between 2010 and 2015, the amount of e-waste produced in the region increased by more than 60 percent. The growing amount of e-waste can **cause harmful effects on** the environment, but there may be some solutions. **It is essential** to create a system for recycling e-waste, since burning or burying e-waste is harmful to the environment. **Another option is** to reuse old electronic devices by sending them to developing countries.