Tuesday, July 17, 2007
思念是一种病 @ 6:30 AM
feel like packing for my atc now ahahahah. though its like on friday and i have effing idea why am i so excited over it and yes, please dont get mistaken mervyn sir, ray seen and ngik hiong! its not over _ like doh *rolls eyes wahahahah.and i havent done my chem worksheet but its okay because there is no chem tml! :D ahahah. shall reply to tags!
shoutouts}
mervyn: wahahah i'll win next time derh!
lewis: I AM NOT CRAZY LOH!! AND IM SMART, I GUESSED IT :D
jolene: hahah, cool bo this tagboard,
mavis: siao ah i then dont want so painn!!
johanna: doh... only you so late than find wahahahah! :D
GB: hahahah that just makes me all the more dont want to put!
ray: you should be! :D :D :D
kerensa: hey yo kerensaaaaa
megan: no i do not i only oogle at those handsome ones, such as DARREN ^^
okay. i think my skin is sooo niceee. :D rarrh, there's napfa tml and i think i'll just die on the spot for shuttle run and standing broad jump -.^
and i was just wondering how did the dinosaurs disappear?
from wiki:
At the end of the Cretaceous Period, approximately 65 million years ago, a catastrophic extinction event ended dinosaurs' dominance on land. The Cretaceous–Tertiary event was the catastrophic mass extinction of extant animal species in a comparatively short period of time. The event occurred approximately 65.5 million years ago. It is widely known as the K–T extinction event, and its geological signature, usually a thin band dated to that time and found in various parts of the world, is called the K–T boundary (K is the traditional abbreviation for the Cretaceous Period, to avoid confusion with the Carboniferous Period, abbreviated as C, and the Cambrian period, denoted C).
Non-avian dinosaur fossils are not found later than the K–T boundary, except for a few controversial exceptions. Most, if not all, non-avian dinosaurs became extinct during or possibly a few years after the event.[1] Many other groups of animals and plants, including mosasaurs, plesiosaurs, pterosaurs, and invertebrates, also became extinct at the K–T boundary. The event marks the end of the Mesozoic Era, and the beginning of the Cenozoic Era.
Most of the extinctions occurred in a relatively short period of time because of extensive weather changes reduced photosynthesis thereby reducing the amount of plant material available to herbivorous animals. This change in food supply caused a massive disruption in the earth's ecology.
The cause of the event has centered on an large impact event, increased volcanic activity or other causes (in combination or separately). Several impact craters along with massive volcanic activity in the Deccan traps have all been dated to the approximate time of the extinction event. Despite the severity of the K–T extinction event, there was significant variability of the rate of extinction of different classes of organisms. Organisms which depended on photosynthesis became extinct or suffered heavy losses – from photosynthesising plankton (e.g. coccolithophorids) to land plants and organisms whose food chain depended on photosynthesising organisms, e.g. tyrannosaurs (which ate herbivorous dinosaurs).[2][3] Animals which built calcium carbonate shells became extinct or suffered heavy losses (coccolithophorids; many groups of molluscs, including ammonites, rudists, freshwater snails and mussels), as did organisms whose food chain depended on these calcium carbonate shell builders. For example, it is thought that ammonites were the principal food of mosasaurs.[4]
Most omnivores, insectivores and carrion-eaters appear to have survived quite well. It is worth noting that at the end of the Cretaceous there seem to have been no purely herbivorous or carnivorous mammals. Many mammals, and the birds which survived the extinction, fed on insects, larvae, worms, snails, etc., which in turn fed on dead plant matter. They may have survived the collapse of plant-based food chains because they lived in "detritus-based" food chains.[5]
In stream communities few groups of animals became extinct. Stream communities tend to be less reliant on food from living plants and are more dependent on detritus that washes in from land. The stream communities may also have been buffered from extinction by their reliance on detritus-based food chains.[6] Similar, but more complex patterns have been found in the oceans. For example, animals living in the water column are almost entirely dependent on primary production from living phytoplankton. Many animals living on or in the ocean floor feed on detritus, or at least can switch to detritus feeding. Extinction was more severe among those animals living in the water column than among animals living on or in the sea floor.[7]
The largest air-breathing survivors, crocodilians and champsosaurs, were semi-aquatic. Modern crocodilians can live as scavengers and can survive for months without food. Modern crocodilian young are small, grow slowly, and feed largely on invertebrates and dead organisms or fragments of organisms for their first few years. This detritus-based food chain has been linked to crocodilian survival at the end of the Cretaceous.[5]
basically i just copied the whole chunk but dont you think its so interesting? like, the dinosaurs have dominated the earth for so long and we only found out their existence from 200 years ago? which is kind of sad.
lalalala. SHALL GO SLEEP NOW.
and i have a great deal of respect for the crocodiles already wahahah since their ancestors are like from so way far back!