Earth went 17-1 in the war. Their only loss was when they attempted the life+earth duo.
Adrenaline's sweet spots are at 3 damage and at 8 damage. Sure, that means shriekers would work unupgraded, but graboids would require time quanta. And even if you did decide to go with the shrieker adrenaline combo, it costs 8 earth to play, meaning you'd be spending 12 quanta for 17 damage. Life can do way better than that.
No, earth + life is life's worst duo, and it doesn't work.