Match these items.
1 .
water droplets
necessary organisms in nitrogen cycle
2 ....
Match these items.
1 .
water droplets
necessary organisms in nitrogen cycle
2 .
denitrification
release of nitrogen from nitrogen compounds
3 .
bacteria and plants
process of using oxygen to obtain energy from carbon-containing food
4 .
respiration
forms as water vapor condenses
5 .
people and animals
use plants for food
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