(3)Delegated Regulation (EU) 2021/2139 does not cover all economic activities that may contribute substantially to climate change mitigation or climate change adaptation. To further facilitate environmentally sustainable investments, it is necessary to lay down additional technical screening criteria for those economic activities that may contribute substantially to climate change mitigation or climate change adaptation without significantly harming the other environmental objectives, but which are currently not covered by Delegated Regulation (EU) 2021/2139. The additional economic activities that contribute substantially to climate change mitigation cover largely the transport sector and its value chain. The additional economic activities that contribute substantially to climate change adaptation cover largely activities enabling adaptation to the unavoidable effects of climate change, including desalination and services for preventing and responding to climate-related disasters and emergencies.