Mass Extinction

Question 1

Mass Extinction

Answer 1

Occurs when many species dissappear over the same period of time.

Question 2

How many important mass Extinctiond occurred

Answer 2

5

Question 3

They all had physical caused like

Answer 3

Climate changed, volcanic eruption and continental drift.

Question 4

Name 5 Extinction

Answer 4

End of ordovician period
Late devonian period
End of permian period
End of triassic period
End of cretaceous period.

Question 5

Cause of cretaceous period

Answer 5

Volcanic eruption in India(was. Separate mass of land drifting north and the Collison with Asia caused a high level of volcanic activity, the dust and ash in the atmosphere after an eruption blovkrf the rays of the run and led to a cooling of the atmosphere, cie sheets were formed at the poles, sea levels dropped and the aquatic habitat decreased. Less photosynthesis occured and the amount of oxygen leading to Extinction and the surface of earth is submerged in carbon dioxide intensifying greenhouse effect that causes global warming, ice masses melt and terrestrial habitats are flooded and destroyed.

Meteorite collisions with the earth
The Collison of earth and a meteorite emmited dust and rubble into the air,blovking rays from the sun to the earth, the heat of the impact led to Extinction of plants and animals including dinosaurs and led to a drastic drop in atmospheric and earth temperatures.