Life
Rising sea levels may have helped dinosaurs dominate the planet
A vast floodplain was drowned by rising seas 227 million years ago and this could have created the ecological conditions for dinosaurs to become more common
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A vast floodplain was drowned by rising seas 227 million years ago and this could have created the ecological conditions for dinosaurs to become more common
When a large asteroid hit the Earth 66 million years ago, it sent huge curtains of dust flying tens of kilometres up into the air that quickly covered the planet