细菌的由来细菌是从哪里来的?是在空气中吗?周围都有细菌?

来源:学生作业帮助网 编辑:作业帮 时间:2024/12/02 03:13:53
xWnG OY`4^a#ؗ}H+` ر gٷxSER$%R)RRDR&Mۿ8S=O=5=Qr 1=Uuԩ⣍rUeJ(ivX+'XZG٢_pƗ/=Unh.j }ɣ6ܿreGg u8Sﮅ-Ԭ t$jV c0 RzGU.|D!j6sefD .jz#:G"U{0ŋO^?OZ'?oo>Of glv?VPN2R2^զf[Uuv-;;v\*_ 4Pv#c2i ѩ/xP˘xы|W_d4Eswe曵n^DcRkxƃ43޺3ߕwNjϞzl}_3:LjxOsQΪH[zvKJ8꺸:H>`I{5!k);s691Rf8bR>"܎U5jrPWSD<[t5uH& c H,S[EE |%z?hìJ l##k=]^Y\*"q&Nd/V=%ǹp-6awg^HXn͂܍@Ryn+rygQ5擱$`[4Px٬I558)τ5aTГH]:y$9eݣCTI46WE E R 9_4n*v@i@xu5vTtIk\Si+ GR|_-q 47J WB%!s_e |;1OXJS~S\A7D֮< M&׷i8Da :-E,l, t-k`!2@HQxP/|i%t𫰳u =p4d y}2ԬsY| Ons@,Q:f0pxXsun ת} NzW+pge<*e'[[Ķ_IẒƘULkQf>8nc zFZhMƌ̍g^oc}34G(èId0 ٱT1̖GxE)3: T{zuV`Oĕ0y+Cș,"LRUqЂhUfa0?;,$wZe7VcևBPzS?7R bՎK=|Ĭ>D\z:gvU-ro`  s0xɿ&G^o<1&