물을 유효하게 흡수하는 한편 증발에 의한 물의 손실을 방지하기 위해 적절한 체계가 발달한 점은 육상생물의 공통된 구조라 할 수 있다. 육상생태계의 수량의 과부족은 생태계의 구조와 생산량을 지배하는 제한요인으로 중요한 것이다.
물의 흡수와 손실사이에 만족할 만한 평형을 유지하게 하는
The remorseless drought had lasted now for ten million years, and would not end for another million. The reign of the terrible lizards had long since passed, but here on the continent which would one day be known as Africa, the battle for survival had reached a new climax of ferocity, and the victor was not yet in sight. In this dry and barren land, only the small or the swift or the fierce could
drought and famine.
REVERSE ANGLE. STUDENTS.
They stare back in stunned silence. One of them, DAVID
WAGNER, sits in the front row with a pencil in his mouth.
Nobody moves ...
SCIENCE TEACHER
(chipper classroom tone)
Okay. Who can tell me what famine is?
CUT TO:
1958.
Birds are chirping. The sun is shining. All the hedges are
neatly pruned and the lawns are perfectly manicured. A sweet
stillness h
drought-stricken soil of nowhere.
TITLES:
KENYA - 1978
A group of children at play. Tribal children who,
without the help of the titles, could be from any age.
They run through a tiny village of tents, playing. Every
child holds a long reed-like stick and they chase each
other playing their version of tag.
As each child is tapped, they chase the others. Each
trying to avoid being "it", though nev
2. Optimal conditions for SLA
A lot of scholars proposed the optimal conditions for SLA. The commonalities among these descriptions of optimal conditions for second language acquisition are clear. They stress the importance of creating opportunities for students to have reason to attend to the language, of giving them ample opportunity to use the language for both meaning-focused communicat