Page 20 - Primary Seven Notes

QUESTIONS . I

1. In which one way do plants depend on?

a) Cattle b) human beings c) goats
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2. Mention any one advantage of using biogas over using fire-
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3. How is a biogas digester important in the production of bio-
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4. Cite any one thing used in the making of biogas.
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5. Write down any three ways how animals depend on non liv-
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ing things in the environment.
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6. In what way can a farmer use the residue left after making
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7. State any two uses of biogas to human beings.
8. Why is wind said to be a form of energy?
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9. How does use of biogas contribute towards the control of
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environmental degradation?
10. What danger can be caused when biogas containers are
kept near the reach of young children?
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