Which unexpected natural material has recently been developed into a biodegradable packaging foam that major sustainable retailers are adopting as an alternative to styrofoam?

The natural world is inspiring innovative sustainable packaging solutions in retail. As consumers become more environmentally conscious, brands are turning to nature-based materials to reduce plastic waste and carbon footprints. This trivia tests your knowledge about one groundbreaking biodegradable packaging innovation that's changing how sustainable retailers think about product protection and presentation. Do you know which surprising natural material is making waves in eco-friendly packaging design?

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Mushroom mycelium (fungal root networks)
Compressed autumn leaves
Jellyfish collagen
Processed pine cone scales