Keyword Analysis & Research: what do the rods and cones do

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what do the rods and cones do	0.18	0.9	1699	81	29
what	0.28	0.7	51	86	4
do	1.56	1	4880	56	2
the	1.13	0.1	2800	46	3
rods	1.64	0.3	3888	96	4
and	1.82	0.3	9258	23	3
cones	0.54	0.8	1410	43	5
do	0.54	0.2	1035	15	2

Keyword	CPC	PCC	Volume	Score
what do the rods and cones do	0.73	0.6	5505	19