고1-21년-06월-30-어휘_RA_김리우_240424-190202.mp3

작성일 :  2024-04-24 19:02

이름 : 김리우

홈페이지 :  acm-gam-01
첨부파일 :


잘 봐주세여 ^^

Detailed study over the past two or three decades is showing/

that the complex forms of natural systems are essential/

to their functioning./

The attempt to straighten rivers and give them regular cross sections/

is perhaps the most disastrous example of this form and function relationship./

The natural river has a very irregular form:/

it curves a lot, spills across floodplains,/

and leaks into wetlands,/

giving it an ever changing/

and incredibly complex shoreline./

This allows the river to accommodate variations/

in water level and speed./

Pushing the river into tidy geometry destroys functional capacity/

and results in disasters like the Mississippi floods of 1927 and 1993 and,/

more recently,/

the unnatural disaster of Hurricane Katrina./

A $50 billion plan to “let the river loose” in Louisiana recognizes/

that the controlled Mississippi is washing away/

twenty four square miles of that state annually./

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