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]
a. Suggest why the mesocosm i f )h-lzrm q)kt,tqb3, gg0z:ss pwch ldj a(3z-noc5s +7ersisting despite being sealed for over 50 yearsazo+sc-5h ndjw(7 3 lc.
参考答案: Any two of these points for 2 marks:
Nutrients are being recycled / There are saprotrophic bacteria and fungi present.
There is a balance of organisms / stability of system / diversity of species.
Materials available are sufficient for the needs of the organisms present.
Light energy can enter the bottle.
本题详细解析:
暂无
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