开头段：I believe that who should be held accountable for this development is important, and will try to elaborate blow.
主题段1 (government): I feel that governments should take the largest blame, and one argument in favor of this view can be that…
主题段2 (individuals): I also believe that individuals should take responsibility for it, and one compelling reason may well be that…
结尾段：I believe that governments and individuals should be both held responsible for climate change.

Government: have legislative, executive and judicial power over the general public and private sectors
 Implement carbon tax schemes and clean air act —> encourage environmentally-friendly practices including less use of private vehicles, reduced levels of carbon emissions —> reduce our carbon footprint and create better living environments for generations to come.

Individuals: have a direct impact on the environment
 are willing to give up their private vehicles and choose non-mortised options or public transport systems —> alleviate environmental burden —> address the issue from its root causes and promote sustainable development