Essay - Will Earth be Extinct Someday? Abstract: This Paper is on...

Will Earth be Extinct Someday?

*****: This paper is on the topic of earth extincti***** similar to Mars may become a fact because of various problems in the earth. What can be done to stop ***** extinction of the earth?

Will ***** suffer the same fate as Mars? How can we protect our planet? Five known mass extinction has happened to ***** earth already, how ***** scientists stop another one from happening? A mass extinction on Earth happened 25 years ago and that wiped out approximately 90 percent of life ***** the earth at th***** time. This was triggered by a collision with a comet or asteroid. Can this happen again? What can ***** done to save our ***** Earth?

There have been 5 ***** mass level extinctions in Earth's history; ********** events are characterized ***** the marked decline of biodiversity which mark the end of a geologic period" (Mat*****ws 11-4-1). Not only has earth had ***** with asteroids ***** meters, but scientist have discovered evidence that a meteor impact may have been the trigger to the collapse ***** civilizations more than 4,000 years ago. Studies that scientists ***** done in southern Iraq could possibly point to the Middle East being struck by a l*****rge crater. "The catastrophic effect of these ***** explain the mystery ***** why so many early cultures went into sudden decline 2300 BC" (Matthews 11-4-1).

***** problem that earth is faced with ***** the solar events that pose a serious problem to Earth. "A well placed solar ejection could effectively sterilize the planet" (Samuel 1-20-2). Many ***** believe that Earth could be destroyed if hit by an asteroid. Most scientists have accepted findings that ***** earth was one time hit by an asteroid or meteor. However, most scientists do not know the exact place that this *****ed.

*****nother problem faced by ***** is the temperature ch*****ge. "Most researchers who focus on climatic changes throughout his*****ry explain that a ch*****nge in just a few degrees c*****n and will have last*****g planet wise effects-most of these effects are detrimental to *****-including human life" (Davis 1). Nuclear war would not only hurt the earth immediately, but also have far lasting affects. In fact, scientists ***** that the effects of smoke ***** ash have already happened ***** the earth once about 6***** million ***** ago. "We not know that an asteroid, roughly the size ***** Mount Everest, slammed into what is today the Yucat***** Peninsula of Mexico. About ***** every 30 to 60 million years, something devastating occurs on ***** planet" (***** 1). Other planets have faced asteroids as well as other problems. Mars is one of them.

Earth's is losing oxygen *****cause the net production of free ***** ***** declining. One reason for ***** is ***** destruction of the forests of ***** Earth even though we know that we need the forests. "***** was blown away by a massive planetary *****—***** in our case, we are in the final stages ***** busily turning the ***** into a treeless, oxygen