Fix grammar errors: Actually, global warming and energy crisis have been being extremely hot topics these years and large proportion of governments' revenue has been spent on the research and development of new energy resources, such as solar energy and tidal power.
The above is a corrected version of the original article.
The energy crisis has been a major cause of global warming and energy crisis, and the global warming has been caused by the greenhouse effect.
Corrected: The global warming has been caused by the greenhouse effect and the global warming has been caused by the greenhouse effect.
Corrected: The global warming has been caused by the greenhouse effect and the global warming has been caused by the greenhouse effect.
Corrected: The global warming has been caused by the greenhouse effect and the global warming has been caused