2008年4月25日 星期五

4.3p68-69

4.3 what is an ecological niche?

Each species plays a unique role in its ecosystem
1.生態地位(棲位)(位)ecological niche is its way of life or role in a community or ecosystem
2.generalist species廣泛性物種 have broad niches, live in many different places, eat variety food, tolerate wide range environmental condition.
3.specialist species特化物種 occupy narrow niches, live only one type of habitat, few type of food tolerate a narrow range of climate and 其他各種環境狀況
4.何種較優視狀況而定當環境穩定時特化物種較有利 當環境經常改變時則有利於廣泛性物種
raccoon浣熊
crustaceans貝類
skimmer燕鷗
flamingo紅鶴
scaup斑背潛鴨
pelican鵜鵠
heron蒼鷺
avocet長腳鷸
oystercatcher蠣鷸
dowitcher灰色田鷸
herring gull 銀鷗
knot(sandpiper鷸)
turnstone鶇
plover千鳥
mollusk軟體動物
wade into攻擊
bill鳥嘴
clam蛤蠣
mussel貽貝
shellfish貝
pry翹起
beak口
probe探查
recede tide 退潮


Science focus-- cockroaches: natures's ultimate survivors
5.one of evolution's great success stories, 350 million years
6.複眼2000晶體, 1年能繁殖10million個後代 high reproductive rate
fingernail clipping指甲
ecectrical cords電源線
glue膠水
soap肥皂
dishrag抹布
evade躲避;逃避
pursuit追蹤,追擊
lenses(眼球的)晶體
hepatitis肝炎
polio小兒麻痺症
typhoid fever傷寒的
plague鼠疫
salmonella沙門氏菌
asthma氣喘
allergic過敏的