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Question 1 Fill in the blanks: (a) Cleaning of water is a process of removing __. (b) Wastewater released by houses is called __. (c) Dried __ is used as manure. (d) Drains get blocked by __ and __.

Answer»

Question 1
Fill in the blanks:
(a) Cleaning of water is a process of removing __.
(b) Wastewater released by houses is called __.
(c) Dried __ is used as manure.
(d) Drains get blocked by __ and __.



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