(c) (i) State four physical properties of water. (ii) State three methods of improving upon the quality of water for domestic use. [5 marks] (d) (i) Name two organisms involved in the nitrogen cycle. (ii) State three ways in which the nitrogen cycle is important to living organisms. [5 marks]
Answer (2)
Water has unique physical properties such as polarity, high specific heat capacity, density, and surface tension, which are vital for life. To improve water quality for domestic use, methods include filtration, boiling, and chlorination. In the nitrogen cycle, organisms like Rhizobium and certain bacteria play crucial roles, providing essential nutrients for plant growth and supporting ecological balance.
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Water has unique physical properties such as polarity, high specific heat capacity, density, and surface tension, which are essential for life. To improve water quality for domestic use, methods like filtration, boiling, and chlorination can be employed. The nitrogen cycle involves organisms like Rhizobium and nitrogen-fixing bacteria, and it's essential for providing nutrients, enhancing soil fertility, and supporting protein synthesis in living organisms. ;
