Paraphrase this. In my opinion the significant drawback of air transport is its higher cost compared to other methods such as sea or land transport. Statistics shows that the aviation industry relies heavily on fossil fuels, thus these in my opinion leads to concerns about energy security, price volatility in the world market, and the environmental impact of oil extraction and consumption. It is factual that the aviation industry is a significant contributor to carbon emissions and air pollution, which has detrimental effects on the environment and these contribute to climate change.