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Waste not want not
Questions:
1.
5.
What is the main decomposer of
organic waste?
Why must sewage be treated before it
is released into the environment?
describe the conditions which favour
the bacterial breakdown of waste
what is the importance of nitrogen
compounds to healthy plant growth?
describe the nitrogen cycle
6.
how is compost made?
7.
why is waste disposal becoming more
of a problem?
what are the main processes that
release CO2 to the atmosphere?
what is the value in recycling?
2.
3.
4.
8.
9.
10. [] explain the main stages and
processes in the nitrogen cycle
11. [] What are the main stages in the
conversion of ammonium compounds
into nitrates in soil?
12. [] what are the main process by which
carbon dioxide is removed from the
atmosphere?
13. [] describe the greenhouse effect
Answers:
bacteria
it is a powerful pollutant
warmth, moisture, access of air
help plants make protein - for growth and repair
plants take up N from the soil - they die or are eaten - end up back in the soil as
waste. N2 from the air gets into the soil from "nodules" - bacteria on the roots of
peas and beans or during a thunder storm or as nitrogen fertilizer
biological (organic) waste broken down by bacteria
increasing population density
combustion of fossil fuels; biomass; decay of plant material; action of acid rain on
carbonate rock
reusing materials to preserve resources and prevent pollution
see above
bacterial decomposition
photosynthesis; solution in seas; erosion of carbonate rocks)
carbon dioxide contributes to global warming - traps heat in the atmosphere
Waste not want not
Questions:
14.
18.
What is the main decomposer of
organic waste?
Why must sewage be treated before it
is released into the environment?
describe the conditions which favour
the bacterial breakdown of waste
what is the importance of nitrogen
compounds to healthy plant growth?
describe the nitrogen cycle
19.
how is compost made?
20.
why is waste disposal becoming more
of a problem?
what are the main processes that
release CO2 to the atmosphere?
what is the value in recycling?
15.
16.
17.
21.
22.
23. [] explain the main stages and
processes in the nitrogen cycle
24. [] What are the main stages in the
conversion of ammonium compounds
into nitrates in soil?
25. [] what are the main process by which
carbon dioxide is removed from the
atmosphere?
26. [] describe the greenhouse effect
Answers:
bacteria
it is a powerful pollutant
warmth, moisture, access of air
help plants make protein - for growth and repair
plants take up N from the soil - they die or are eaten - end up back in the soil as
waste. N2 from the air gets into the soil from "nodules" - bacteria on the roots of
peas and beans or during a thunder storm or as nitrogen fertilizer
biological (organic) waste broken down by bacteria
increasing population density
combustion of fossil fuels; biomass; decay of plant material; action of acid rain on
carbonate rock
reusing materials to preserve resources and prevent pollution
see above
bacterial decomposition
photosynthesis; solution in seas; erosion of carbonate rocks)
carbon dioxide contributes to global warming - traps heat in the atmosphere