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 m .exywgilx2 x3vip qa)a-52+are needed f:g(+ pl8 x*cj9qfl zqzla3b .from outside the sealed system to maintain iff*zga: xbp+l zql3.9(8cqjl ts
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:
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