The carbon and nitrogen cycles both play an important

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Question 20 The carbon and nitrogen cycles both play an important role in food production. Which of the following processes is part of both the nitrogen and carbon cycles? END OF SECTION A TURN OVER
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CHEM EXAM 2 8 SECTION B – continued SECTION B – Short-answer questions Instructions for Section B Answer all questions in the spaces provided. Section B is worth approximately 73 per cent of the marks available. To obtain full marks for your responses you should give simplified answers with an appropriate number of significant figures to all numerical questions; unsimplified answers will not be given full marks. show all working in your answers to numerical questions. No credit will be given for an incorrect answer unless it is accompanied by details of the working. make sure chemical equations are balanced and that the formulas for individual substances include an indication of state; for example, H 2
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