1. producer
gets energy directly from producer
2. primary consumer
breaks down dead organisms
3. carnivore
eats only meat
4. omnivore
eats meat and plants
5. decomposer
makes own food

1. Producer:

        Makes own food

2.  Primary consumer:

        Gets energy directly from producer

3. carnivore

        Eats only meat

4. omnivore

        Eats meat and plants

5. Decomposer

        Breaks down dead organisms

Hope this helps :)  

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.