Environmental Science
Nitrogen gas returns to the atmosphere by the action of

Denitrifying bacteria
Nitrate fertilizers
Nitrifying bacteria
Nitrogen fixing bacteria

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Environmental Science
Which of the following statement is incorrect regarding ecological pyramids

The pyramid of energy is inverted in ocean ecosystem
The pyramid of biomass is upright in grass land ecosystem
The pyramid of numbers is upright in grass land ecosystem
The pyramid of biomass is inverted in aquatic ecosystem

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