OUTLINE WHAT HAPPENED TO THE DINOSOURS
Introduction
i. I bet there are few people that do not know regarding dinosaurs.Especially how the dinosaurs dead and gone.
ii. Today,i would like to inform about what happened to dinosours which are the most priceless treasure that we have in this world.
iii. To inform about the palaeontolagy,the study of fossil which are the remains of the past ages.
iv. There is one method that have been used to determine the fossils is radiocarbon dating.It measure the rate of carbon decaying in the fossil.
A.But,there are several problems with this technique.Its so hard to determine the the concentration of carbon since the level of radioactive has fallen so low.
B.In addition, even in more recent specimens,the level of radioactive has fall so low.So,with the great difficulty the specimen can be measured.
BODY
i. There are many rumors and theories that conlude the extinction of dinosours.
ii. The most popular theory is a big comet had crashed into the earth,the size of comet or asteroid is approximately 6 to 12 miles.
iii. It cause darkness for many months,since lots of dust were spread all over the earth.
iv. A global wildfire would have destroyed over half of all living things. Water would have been poisoned in most places, and the earth would have sunk into a deep freeze while the dust was in the air.
v. However,before the comet came to the earth,there are changes in earth’s climate.Such as,massive volcanoes were erupting,earthquake,hurricane.
The Essay on Atmosphere Of Earth
Atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation. A. Nitrogen – 78% – Dilutes oxygen and prevents rapid burning at the earth’s surface. Living things need it to make proteins. Nitrogen cannot be used directly from the air. The Nitrogen ...
Conclusion
i. As we have seen,the comet and the earth’s climate are the main cause that creatures that were able to survive all these changes came to dominate the landscape.
ii. These events were also bring in a new climatic cycle to the earth and the
mammals grew larger, and moved into new areas, taking over locations that
had previously been the habitat of dinosaurs.Changes in sea levels, ocean
currents.
iii. But,the most important is these great creatures are the priceless treasure that we have.And, i know that many palaentologists are agree to what im saying.
