20101017иԇxC(jng)ؑ
rg2010-10-19 10:02:00 ԴonW(wng) [wС ]
1017иԇ˚gϲ˱¾1017иԇC(jng)ϣ
1017иԇxC(jng)
һƪprehistoric diet
P1,many ways to know the prehistoric diet, one way--indirect---ͨ^rnatural environmentr(nng)I(y)Դ֪ʲô(})however,the flaw of this method---can't know what's the most important part of their diet(})
P2,another way--direct--ͨ^food remains in the garbage heaps or other sites---problem: the food remains usuallly fragile(~R})--a solution by scientists: һBһȡ،ңһNliquidʹ֮xfood remainsorganic@Nliquid渡(Ӻ})
P3,ͨ^Xwear on the teethõgeneral info about their diet, for example, dog teeth---meat(})
ڶƪmorphography
P1 same species of plant,different in different light conditions
P2, two examples can only live well in specific light environment while others can adapt to various light conditions
P3, £moss LLstem--@elongationڏ£Ldiameter
P4ԞIJ@Nr~Ҳչʾelongationand they can compete for light
ƪ
p1ǰһֱԞןo19th century l(f)F(xin)һȻlead to many researches
p2ǰһֱԞﶼСsnailswormsǺl(f)F(xin)䌍ǺҰUreason: lack of competition, abundance in food and lack of juvenile(}@~ҪJR)
p3,antarctic l(f)F(xin)ȻϰٷN~
P4AntarcticaһNbarrierKˮ~ȥwarm~MȻůҲM@Щ~һNspecial blood protein which bind to the crystal so that they can survive
P5,bacteriaorganismǧpressure,ŵС300pressureĕr
1017иԇxC(jng)
һƪprehistoric diet
P1,many ways to know the prehistoric diet, one way--indirect---ͨ^rnatural environmentr(nng)I(y)Դ֪ʲô(})however,the flaw of this method---can't know what's the most important part of their diet(})
P2,another way--direct--ͨ^food remains in the garbage heaps or other sites---problem: the food remains usuallly fragile(~R})--a solution by scientists: һBһȡ،ңһNliquidʹ֮xfood remainsorganic@Nliquid渡(Ӻ})
P3,ͨ^Xwear on the teethõgeneral info about their diet, for example, dog teeth---meat(})
ڶƪmorphography
P1 same species of plant,different in different light conditions
P2, two examples can only live well in specific light environment while others can adapt to various light conditions
P3, £moss LLstem--@elongationڏ£Ldiameter
P4ԞIJ@Nr~Ҳչʾelongationand they can compete for light
ƪ
p1ǰһֱԞןo19th century l(f)F(xin)һȻlead to many researches
p2ǰһֱԞﶼСsnailswormsǺl(f)F(xin)䌍ǺҰUreason: lack of competition, abundance in food and lack of juvenile(}@~ҪJR)
p3,antarctic l(f)F(xin)ȻϰٷN~
P4AntarcticaһNbarrierKˮ~ȥwarm~MȻůҲM@Щ~һNspecial blood protein which bind to the crystal so that they can survive
P5,bacteriaorganismǧpressure,ŵС300pressureĕr