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The Nitrogen Cycle

Marlee, Taryn, Ashley
Across
The process by which a dead organism is broken down ad turned into ammonium by decomposers.
The rapid growth of algae.
Low oxygen
The six key elements that all organisms need in relatively large amounts.
An element that is essential to the species in it but is found in a concentration low enough to be a limiting factor on the population.
The process by which plants and animals incorporate ammonia and NO3 formed through Nitrogen fixation.
The loss of water-soluble plant nutrients from the soil, due to rain and irrigation.
Organisms that break down dead organisms.
Down
Organisms that make their own food.
The most abundant element in the atmosphere.
The first step in the nitrogen cycle. The conversion of Nitrogen(N2) into Ammonia(NH3).
Organic compounds found in all living cells.
The process associated with the loss or removal of nitrogen or nitrogen compounds.
The process of the biological oxidation of ammonia or ammonium to nitrite.
Organisms that receive energy by consuming other organisms.
Long chains of organic molecules.