Final answer:
The positive effect of the Kyoto Protocol was the reduction of greenhouse gas emissions and addressing climate change issues.
Step-by-step explanation:
The positive effect that the Kyoto Protocol intended to achieve was the reduction of greenhouse gas emissions and the addressing of climate change issues. The protocol created a legal commitment for participating countries to take action to combat climate change. While some countries ratified the Kyoto Protocol and made progress in reducing greenhouse gas emissions, it was not universally successful worldwide. The intended replacement for the protocol has not yet materialized due to disagreements among governments.