How do glasshouses not fry every plant inside during the summer?

Question

How do glasshouses not fry every plant inside during the summer?

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Answer 1

Vents are at ground level with the cooler air, opening windows are high up with the hotter air. Heat rises so when you open them both cooler air is drawn in by the hotter air escaping. You can also have blinds/shadesto block the sun and sprinkler systems to bathe the plants in condensation to help keep them cooler that way