when did animal life begin on earth

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did animal life begin on earth	0.72	0.6	2528	87	35
when	1.42	0.4	3203	40	4
did	0.03	0.6	6138	90	3
animal	0.61	0.9	5301	33	6
life	0.39	0.1	9508	67	4
begin	0.1	0.4	3814	32	5
on	0.02	0.9	4104	64	2
earth	0.92	0.6	8767	20	5

Keyword	CPC	PCC	Volume	Score
when did animal life begin on earth	1.81	0.5	9924	82
when did animals appear on earth	1.25	0.1	905	81
when did land animals appear on earth	1.49	0.1	3977	60
first animal life on earth	1.63	0.9	7331	94
history of animals on earth	1.14	0.3	4680	60
when did life start on earth	1.59	0.7	9963	18
when did animals exist	1.17	0.4	704	47
when did animals emerge	0.59	0.9	2572	46
how long have animals been on earth	1.57	0.5	300	27
how long have animals existed on earth	1.67	1	5313	25
when did animals first appear on land	0.67	0.3	3692	98
when did animals first appear	0.68	0.1	4613	94
timeline of animals on earth	0.97	0.8	4717	81
earliest animals on earth	1.9	0.8	4492	10
what era did animals first appear	1.53	0.8	5641	64
what period did animals first appear	0.74	0.7	6983	44
when were animals created	1.43	0.5	7267	57
how long have animals existed	1.88	0.1	5334	66
how long have animals been around	0.63	0.8	4831	88