BIOLOGY SSS 2 SECOND TERM

WEEK TWO

NITROGEN CYCLE - DECOMPOSITION IN NATURE

PERFORMANCE OBJECTIVE

Students should be able to;

1. Describe with a diagram the role of Nitrogen
2. State the importance of Nitrogen
3. Describe the process of the Nitrogen cycle
4. State that energy can be obtained by decomposing  organic substances
5. Identify one of the gases produced during the decay process

CONTENT

 The air we breathe contains 78% nitrogen, 21% oxygen and remaining are other trace gases. The nitrogen component of air is inert. So this means plants and animals cannot use it directly. To be able to use nitrogen, plants convert atmospheric nitrogen to nitrates, nitrites and ammonia compounds by a process called the nitrogen cycle. Animals derive their nitrogen requirements from plants.

What are the steps involved in the nitrogen cycle?

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