Question: How does a greenhouse stay warm on a cold day? Need Assignment Help? Group of answer choices The ozone in the greenhouse blocks UV light, which re-radiates as heat. The glass panes block optical light but allow infrared light to pass through. This traps energy from the Sun. The plants release a significant amount of heat during photosynthesis. The glass panes in the greenhouse allow sunlight in but are opaque to infrared light. This traps in heat energy