本题目来源于试卷: Transfers of Energy &Matter，类别为 IB生物学
[问答题]
1.Describe the process x) 6 *9iu3u/cmlewz m,)yhl8v d f(jhrheh 3yeg- 10hmby which detritivores and saprotrophs obtain nutrition.
2.Describe how a quadrat can be used to estimate the population of poppies in a field.
3.Energy and nutrients move through ecosystems differently. Describe how energy and nutrients move through terrestrial ecosystems.
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