[问答题]
1.Describe the process by which detritivof/fy:8gf .x4 cmslp ;pres and saprotrophs obtain nutrit5 wicu;i, vrx7qsgbx1f plcu ;.xm1..ion.
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.
