Pew researchers looked at about 40 studies that could provide an assessment of whether climate was affecting biology.
1	Pew	Pew	PROPN	NNP	Number=Sing	2	compound	2:compound	_
2	researchers	researcher	NOUN	NNS	Number=Plur	3	nsubj	3:nsubj	_
3	looked	look	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
4	at	at	ADP	IN	_	7	case	7:case	_
5	about	about	ADV	RB	_	6	advmod	6:advmod	_
6	40	40	NUM	CD	NumForm=Digit|NumType=Card	7	nummod	7:nummod	_
7	studies	study	NOUN	NNS	Number=Plur	3	obl	3:obl:at|10:nsubj	_
8	that	that	PRON	WDT	PronType=Rel	10	nsubj	7:ref	_
9	could	could	AUX	MD	VerbForm=Fin	10	aux	10:aux	_
10	provide	provide	VERB	VB	VerbForm=Inf	7	acl:relcl	7:acl:relcl	_
11	an	a	DET	DT	Definite=Ind|PronType=Art	12	det	12:det	_
12	assessment	assessment	NOUN	NN	Number=Sing	10	obj	10:obj	_
13	of	of	SCONJ	IN	_	17	mark	17:mark	_
14	whether	whether	SCONJ	IN	_	17	mark	17:mark	_
15	climate	climate	NOUN	NN	Number=Sing	17	nsubj	17:nsubj	_
16	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	17	aux	17:aux	_
17	affecting	affect	VERB	VBG	Tense=Pres|VerbForm=Part	12	acl	12:acl:whether	_
18	biology	biology	NOUN	NN	Number=Sing	17	obj	17:obj	SpaceAfter=No
19	.	.	PUNCT	.	_	3	punct	3:punct	_
