Grow Light Full Spectrum
Light in the wavelengths plants actually use, for growing food without sun.
Scenario
The last forest is in a dome and the order came to jettison it.
Earth's biosphere is gone and the surviving specimens are in orbit under the care of people who have been told to stop caring. The threat is not dramatic. It is a memo, and a very long time alone with a decision.
What kills you
Instruction, and the years afterwards.
Rules
Sunlight is a service you now have to provide personally.
Light in the wavelengths plants actually use, for growing food without sun.
A closed system fails slowly and invisibly unless somebody measures it.
Reads nitrogen, phosphorus, potassium and pH so planting is informed rather than hopeful.
What you are actually preserving is not the plants. It is the seeds.
Sealed, desiccated storage that keeps seed viable for years. Cool and dark does the rest.
Company, and a maintenance crew, assembled from the same box.
Motors, sensors and a controller. A way to keep a mind occupied and a skill current.
You are the last person who will know what any of these are called.
Identification by leaf, flower and habit — including what to leave alone.
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