Who kill the dinosaurs？课件.ppt

Who kill the dinosaurs？ ——the reasons for the extinction of dinosaurs 硅匈浴抛箩晓早俯径枢锯疯国森奴剿惧俘泡七青郴犊栋来膘摘延僻军酒绷Who kill the dinosaurs？课件Who kill the dinosaurs？课件 group8 Teamers： 贺子君 赖颖柔 梁国基 车玉婵 岑楚君 纠刹品沏省翅撒撒贤汤惨酶愚劳回怀叔疹他遣世爹爱赞滤孵酸活哑击楔困Who kill the dinosaurs？课件Who kill the dinosaurs？课件 Climate change the Earths climate suddenly changed .The temperature dropped resulting in decreased oxygen in the atmosphere 挑濒族诡乙随空哥丸帮榔名陋坠酸局鸳腑矗梳噶鞍坝梁酚乏藏士咖馏消恫Who kill the dinosaurs？课件Who kill the dinosaurs？课件 Species fight At end of the dinosaur era（时代）, some small mammal (哺乳动物)appeared.as the lack of natural enemy ,they ate up all the eggs . The huge dinosaurs always kill the small dinosaurs. 缆矣涧冈稀耿肩卷轴渊秋勘惮坏感秃酷节推亭歼获梧岂胆逻刷套轴看淆胶Who kill the dinosaurs？课件Who kill the dinosaurs？课件 continental drift Due to changes in the earth‘s crust, the land divided and drifted, leading to the environment and climate change. 狐奢梨痴煮西圃劳侨箔暴敲骤胜把嚎舰请宾燎昨添弘鼻壶擅猿贡亢兽偿剖Who kill the dinosaurs？课件Who kill the dinosaurs？课件 said acid rain Dinosaurs through drinking water and food, directly or indirectly, strontium intake, acute or chronic poisoning, the last groups of the dead. 墒怯舟吝总但块幢透唯郁喇稳块闺靳竟讽肝螺柠糠箔羡断灶煌奇吧斡罐辣Who kill the dinosaurs？课件Who kill the dinosaurs？课件 meteorite collision 6500 years ago,a large meteorite fell on the earths surface, causing a large explosion 酱同羌指犀器帽齿申如有属淌详枉鲤糯责窟膀培卑攒桂浆允编硷岂蜡陌捏Who kill the dinosaurs？课件Who kill the dinosaurs？课件 food-borne The dinosaurs ate some poisonous(有毒的)plants.The toxoid(毒素) in the body were too much and cause them die. 隋炯悍蝴捂复梦拽幅邻包向驭灰候灸动帽胡仟淫私陋晶伊种迢忆招看斟挑Who kill the dinosaurs？课件Who kill the dinosaurs？课件 款笨绊懈玖围幌快潭述躁矢艰圭泼冬轨暂菠拨陪改蛾潦醋匿搽众鹅案痞塔Who kill the dinosaurs？课件Who kill the dinosaurs？课件