本题目来源于试卷: SL/HL Topic D4.2 Stability and change，类别为 IB生物学
[问答题]
5. David Latimer created the mesocosm pictured below. It was last watered in 1972 and has been sealed ever since that date. It is still viable (living).[img]data/attachment/exam/2502/01/2502010209667685.jpg[/img]
b. State two factors that are needed from outside the sealed system to maintain p p-mhl)f 5tp2fpl5 p)p2mth- v-r (hgq,1e /ebdh0yb/x *r xeig1 e( ehyebrhb/x-d/*v,x r0qts
sustainability.
参考答案: Light as a source of energy.
A suitable temperature/warmth/temperature within tolerance (for the system).
本题详细解析:
暂无
| 
