1 Table of Contents: “... Footprint in Arid and Semi-Arid Regions: Past, Today and Future -- Environmental Footprints of Hydrogen from...”

2 “... in the past decade to treat different wastewaters, and owning to its effective performance, has garnered...”

3 “... and services and also carbon labeling of products have become familiar topics in the recent past in various...”

4 “... in the recent past in various industrial sectors. Every industry has its unique assessment and modelling...”