When only plants are used to absorb or destroy pollutants from soil, the technique is specifically called:

1. Bioremediation uses plants and microorganisms together. 2. When plants alone do the cleaning, the technique is named phyto-remediation. 3. Pisciculture is fish farming, pasteurisation heats milk and vermiculture rears earthworms, so they do not fit. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 8 "Cell Biology and Biotechnology", p.105_