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.
Answer: I believe the answer is D because I know that you can't kill a eagle in the U.S. because it is a protected species.
Answer: Either of the two identical cells that form when a cell divides.
Explanation: