The root word of the word Microvasculer is MICRO
Stomata open in the daytime, when there is an abundance of heat energy from the sun that causes evaporation of water, causing the guard cells to become flaccid, allowing the stomata to open.
The answer to this is, they both are commensalism.
Most saltwater-use is to generate electricity.
There are many ways today to generate electricity, and saltwater is one of those ways.