why did nasa invent water filters

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why did nasa invent water filters	1.23	0.9	344	52	33
why	0.87	0.6	6407	43	3
did	1.68	0.9	7774	54	3
nasa	0.99	0.9	228	61	4
invent	1.16	0.8	3628	78	6
water	1.86	0.3	5144	92	5
filters	0.08	0.2	2855	38	7

Keyword	CPC	PCC	Volume	Score
why did nasa invent water filters	0.62	0.7	9663	90
who invented water filters	1.09	1	6197	90
nasa water filter system	0.18	0.8	4576	75
when was water filters invented	0.54	0.3	6347	49
history of water filters	0.36	0.5	1795	55
water filters nasa spin off	0.31	0.1	3694	95
who invented water filtration	1.13	0.1	2817	45
who made water filters	0.37	0.2	5764	94
research on water filters	0.88	0.8	5459	58
science behind filtering water	0.14	0.8	8031	14
homemade water filters science project	0.17	0.5	1531	88
water filter science experiment	0.29	0.5	6091	71
history of water filtration	0.03	0.1	3543	50
water filter science projects	0.9	0.1	9657	39
water filter system science project	1.65	0.2	6951	62
natural water filter science project	0.86	0.4	5336	60