This is largely cultural and language sensitive. I took the test as a french native speaker and got a green-blue boundary greener than the average population with the commentary "For you, turquoise is blue". Indeed it is. It is called bleu turquoise in french.
Both likely come from (middle) dutch bakboord (the side of your back) facing the stierboord (the side with the steering oar) . Stierboord became estribord then tribord. Its more explicit in modern german and dutch.
Yes the brine could just be diluted wih gray water to reduce the environnemental impact without the energy recovery of the osmotic plant and the capital can be invested in other renewable with better efficiency.
That being said it's a first so it's a pilot project needed to have feedback on a real plant in operation and not just back of the enveloppe calculations and suppositions. Sometime you need to just build the thing to encounter problems, issues or non-issues.
Half the children seem to have one in France. My neighbourhood is full of them. Draisiennes/laufräder/balancebikes are a real transportation means as children go every single day to the crèche on them. Some Kids that do this know how to ride and can learn to ride a real bike before 3. You then have to find one small enough