And that's exactly what happens with PCBs in this food pyramid:
1	And	and	CCONJ	CC	_	0	root	_	_
2	that	that	PRON	PR	PronType=Rel	3	nsubj	_	SpaceAfter=No
3	's	be	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	1	acl:relcl	_	_
4	exactly	exactly	ADV	B	_	3	advmod	_	_
5	what	what	PRON	PR	Number=Sing|PronType=Rel	3	obj	_	_
6	happens	happen	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	acl:relcl	_	_
7	with	with	ADP	E	_	8	case	_	_
8	PCBs	PCB	PROPN	SP	_	6	obl	_	_
9	in	in	ADP	E	_	12	case	_	_
10	this	this	DET	DD	Number=Sing|PronType=Dem	12	det	_	_
11	food	food	NOUN	S	Number=Sing	12	nmod	_	_
12	pyramid	pyramid	NOUN	S	Number=Sing	6	obl	_	SpaceAfter=No
13	:	:	PUNCT	FC	_	1	punct	_	_
