"Ecology is a Primary Tech in tier 1 of the Tech Web. This technology allows construction of Miasmic Repulsor satellites, the Ultrasonic Fence and Vivarium building. There is no affinity linked to this technology"@en . . . "Ecology is a Primary Tech in tier 1 of the Tech Web. This technology allows construction of Miasmic Repulsor satellites, the Ultrasonic Fence and Vivarium building. There is no affinity linked to this technology"@en . "Ecology (CivBE)"@en .