Fossils In Amber Show Us What Earth Looked Like When Dinosaurs Lived | AMBER

In forests when a tree is damaged or attacked, it defends itself by secreting a viscous, sticky substance called resin. This protects the tree from infection or infestation. Over millennia, as forests fell & began to form peat, with time, pressure & heat, their organic material turned to coal....

42 min - Dinosaurs & Prehistory - Spark

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Read Deeper: Dinosaurs

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