Question

Flow of nutrients through an ecosystem is cyclic

Answer 1

Flow of nutrients through an ecosystem is cyclic. This cyclic flow sees nutrients move from one trophic level to another trophic level all the way up and then back down.

Trophic level refers to hierarchical level in the food chain where organism share same nutritional characteristics and roles. 

The cyclic flow is as follows:

Nutrients are manufactured by pproduces, green plants, at the lowest trophic level by the help of the sun's energy through the process of photosynthesis.
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The nutrients made by the producers are passed on to the primary consumers , herbivores,  when they feed on the producers. 
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The primary consumers are feed on by the secondary consumers - and this is how nutrients are passed on from the primary consumers to the secondary consumers.   
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The tertiary and the Quaternary consumers also obtain nutrients from feeding one or all of the lower trophic levels. 
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Nutrients are the transferred back to the soil from the higher trophic levels back to the soil through decomposition of this high level trophic organisms by decomposers  such as bacteria and fungi. 

(The producers then acquire the nutrients from the soil and process of the transfer to the next trophic level begins all over again)

Note; nutrients are transferred also when the process of reproduction occurs, but this is within the same trophic level. 

Answer 2

Energy flow in a biological community is unidirectional. It implies that vitality which is consumed by the makers from the sun and is changed over into compound vitality, dependable spill out of a lower trophic level to a higher trophic level as in an evolved way of life when herbivore consumers producers the energy is exchanged from producers to customers et cetera. Some of this vitality is absorbed some is utilized by the life form and some are scattered in the earth yet the stream of vitality is never returned, that is clearly a producer can not devour a shopper.

Moreover, the energy flow in a biological system starting with one trophic level then onto the next and by the law of preservation of energy it can nor be made nor be crushed just changes its frame and finally is disseminated in nature. Supplements are circled in a biological community in a cyclic shape, it implies the supplements which are used by the makers through soil are again made accessible to soil after the decay of the dead natural issue by the decomposers and from here they are again accessible for the producers for yet another cycle.