▁mixed - bre eds ▁and ▁m ong rel s ▁taking ▁their ▁place ▁formed ▁through ▁natural ▁variation . ▁In ▁Europe , ▁the ▁largely ▁decre ased ▁w olf ▁population ▁exp ands ▁into ▁the ▁countries ▁where ▁it ▁was ▁completely ▁ex termin ated . ▁Upon ▁reaching ▁the ▁ru ins ▁of ▁cities , ▁wol ves ▁come ▁into ▁contact ▁with ▁fer al ▁dogs , ▁compet ing ▁with ▁them ▁for ▁food ▁and ▁bre eding ▁with ▁them , ▁er asing ▁the ▁last ▁traces ▁of ▁domestic ation . ▁There ▁they ▁h unt ▁de er ▁that ▁are ▁expand ing ▁their ▁territ ories ▁into ▁cities ▁now ▁over t aken ▁by ▁grass es ▁and ▁tree ▁growth . ▁ ▁( 7 5 ▁years ▁A . H .) ▁Most ▁cars ▁have ▁now ▁fallen ▁apart . ▁Syn th etic ▁pl astic ▁and ▁rub ber ▁t ires ▁could ▁last ▁for ▁centuries , ▁whilst ▁the ▁body ▁rust s , ▁and ▁the ▁interior ▁and ▁seats ▁dis integr ate ▁and ▁fall ▁apart . ▁ ▁( 1 2 0 ▁years ▁A . H .) ▁The ▁o ce ans ▁and ▁plants ▁begin ▁scr ub bing ▁the ▁Earth ▁clean ▁of ▁anth rop ogen ic ▁carbon ▁dio x ide . ▁ ▁( 1 5 0 ▁years ▁A . H .) ▁Winter s ▁are ▁col der ▁than ▁in ▁the ▁last ▁days ▁of ▁the ▁human ▁race . ▁Northern ▁cities ▁like ▁V ancouver ▁are ▁slowly ▁buried ▁under ▁layers ▁of ▁building ▁snow ▁and ▁ice . ▁Rem ains ▁of ▁ships ▁and ▁brid ges ▁form ▁d ams ▁in ▁the ▁Th ames , ▁flo oding ▁the ▁ru ins ▁of ▁London ▁and ▁turning ▁the