According to the article:
- A Covid-19 pandemic urged the development of the world's first autonomous, zero-emission feeder.
- B Norwegian Company Yara issued a statement about the launching of a new watercraft fully manned,
- C Unmanned craft can whittle down the discharge of foul air and greenhouse gases.
- D Yara and Kongsberg technology company split up due to the virus outbreak.
- E Autonomous and zero-emission feeders are salvage vessels that can stow the level of pollutants.