Question

Define-
1. Septic tank
2. Biogas
3. Drip irrigation
4. Vermicomposting -toilets

Answer 1

BioGas....gaseous fuel specially Methane produced by the fermentation of organic matter
Septic Tank.....A tank typically underground in which sewage is collected and allowed to decompose through metrical activity before draining by mean of a soakaway.
Drip Irrigation.....drip irrigation is a type of micro irrigation system that has the potential to save water and nutrient by alloying water to drip slowly to the root of plants .
Vermicomposting ......vermicomposting is the product of the composting process using various species of worms usually red wigglers white worms and the earthworm