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biology 0610printed 278 · PDF 278
328 pagesrevision 46933
printed 278 · PDF 278
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37 The diagram shows part of the nitrogen cycle.
nitrogen gas in the atmosphere
process R
by bacteria
in the soil
decomposition
protein ee
feeding ammonium
: . process T
digestion ions by bacteria
in the soil
plant decomposition
protein by bacteria
absorption process S
nitrates in the soil
| by bacteria
Which row shows the correct processes for R, S and T?
denitrification nitrogen fixation
nitrification
0 0o DO >
R
T
T
Ss
zDaAAN
4A nRWDA
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