Dinosaurs are extinct because of cold

British researchers claim that the sudden drop in habitat temperature makes dinosaurs go into extinction.

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They said that 137 million years ago, the temperature of the ocean suddenly cooled to about 9 degrees Celsius and that caused mass deaths for the dinosaurs on earth, Telegraph said.

In the past some scientists thought that this animal was extinct 65 million years ago, for another reason. But now the scientific community is convinced that the wave of extinction of dinosaurs emerged from a series of changes in the environment, which began with a drop in sea temperature.

Gregory Price of the University of Plymouth said his team thought that hypothermia occurred when the earth was in a "greenhouse" climate, like it is today. That makes dinosaurs live in shallow, warm waters and swamp dead.

"Dinosaurs are cold-blooded and need high ambient temperatures to keep them warm , " he said. "They died gradually, and probably because of a series of climate changes."

Hypothermia is thought to be due to high levels of CO ₂ in the air. First it causes the temperature of the earth to rise, causing the polar ice to melt, and this causes the earth temperature to decrease. The same situation is being predicted for our earth today.