The term for blue skin caused by lack of oxygen is cyanosis. One is said to be cyanotic when presenting with this discoloration.
I believe you're looking for "invasive species"
In an endothermic reaction, energy is absorbed which causes the object to heat up.
Answer:
3 and 4
Explanation:
Both appear to be up river which mean they're coming DOWN to contaminate the uptake. If they're ahead of the uptake facility they're not going to show up in the water. I only know this because of City Skylines :)
