Regarding Chixculub, Mexico. why would the large impact at
this site have killed the dinosaurs?
a. The explosion would have heated the planet to hundreds of degrees
warmer than present, killing all animal life.
b. The high amounts of radiation would be lethal for any plant or animal
life with complex DNA.
c. The soot and debris of the impact would have cooled the Earth too low
for the larger animals to survive.
d. The impact would have caused a large tidal wave that would have
killed all land animals.
2007-07-06 14:57:38 · 13 answers · asked by Kat Von D 2 in Science & Mathematics ➔ Earth Sciences & Geology
c. it is the most famous theory of all. but all of the other choices have the possibilities to happen because no one really know what caused the extinctions of the dinosaurs.
i hope it helps. Ü
2007-07-06 17:02:52 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The simplest answer is, it most likely didn't. The fossil records of dinosaurs show they died off much to slowly for an asteroid to be the explanation. Even if the resulting debris in the atmosphere took decades, or even a couple of centuries, to kill off the rest of the dinosaures it should appear as an immediate event in the fossil record when you consider these geological layers represent hundreds of millions of years.
Next, if the temperature caused by the event was so extreme that the only land based animals, such as burrowing mammals or cold blooded reptiles that could hibernate, escaped extinction, then how do you explain the existence of birds both before and after the impact event in fossil records. Hot air rises so the skies would have been inhospitable to avian creatures of any nature, yet they were there long before the crater and they're still here today. Where did they hide? Most trees would have been destroyed in the resulting global firestorm.
Furthers, some scientists are now claiming the crater at Chixculub doesn't have the tell tale markings of an impact event at all and is possibly a natural formation caused by geologic activity such as massive eruptions. While such findings are still considered controversial, they do indictate that the extinction debate is far from a settled fact.
2007-07-09 03:29:25 · answer #2 · answered by myke2010 2 · 0⤊ 0⤋
According to the Creationist Musuem of Pseudo-science, the dinosaurs died off because they committed grevious sins against the lord, and were wiped out by God's wrath.
jking, the real answer is not in your answer. The answer is the dust and debris blocked out sunlight, which killed off most of the plants. Thus, the plant eating dinosaurs starved to death, causing the meat eating dinosaurs to starve as well.
2007-07-06 22:05:49 · answer #3 · answered by Anonymous · 1⤊ 1⤋
C
The dust would case a nuclear winter for decades letting no light through, so plants die animal's die from cold weather and starvation.
2007-07-06 22:00:05 · answer #4 · answered by visualize cool name here 2 · 0⤊ 1⤋
Mainly (c).
"Cretaceous-Tertiary extinction event : Chicxulub Crater" : http://en.wikipedia.org/wiki/Cretaceous-Tertiary_extinction_event#Chicxulub_Crater
2007-07-07 07:49:41 · answer #5 · answered by Erik Van Thienen 7 · 0⤊ 0⤋
since we are told that dinosaurs were reptiles, and cold blooded, the earth was probably much hotter then than now. So i pick c as my answer, btw, global warming is BS
2007-07-06 22:01:45 · answer #6 · answered by thephoneguy1234 4 · 0⤊ 2⤋
Actually, George Bush did it.
2007-07-06 22:00:30 · answer #7 · answered by icynici 4 · 1⤊ 0⤋
Magic. Ask God that question.
2007-07-06 22:00:14 · answer #8 · answered by Anonymous · 0⤊ 1⤋
actually its all four,they all happened in the same order u wrote
2007-07-06 22:14:24 · answer #9 · answered by RaZoR 2 · 1⤊ 2⤋
wait what is the question here?? im confuzzled
2007-07-06 22:00:04 · answer #10 · answered by punkrockprincess 2 · 0⤊ 2⤋