Annual vs Perennial Flowers: What's the Difference? Air Plant filled Hanging Glass Globe Snake Plants produce oxygen at night using backward photosynthesisthey're one of only 6% of plants with CAM metabolism. NASA measured them producing oxygen at 5 normal rates during darkness. Each 18 inch leaf Olivenbaum dngen: So strken Sie den Exoten nach dem Winter First Land Plants and Fungi Changed Earth's Climate, Paving the Way for Explosive Evolution of Land Animals, New Gene Study Suggests Eberly College of Science