Answer:
C. Use of a semi permeable membrane.
Explanation:
This techniques improves water taste and odour. It also helps to remove contaminant from water and also impurities. it is effective and safe to use and the system is fully automated and it works as a filtration technique.
23 and for the female and for the male there are 46
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately
