Martinus beijerinck developed the enrichment culture technique to isolate metabolically-distinct microbes from complex natural samples, like soil and water, by manipulating the

By manipulating the culture conditions and nutrients.  

Enrichment culture refers to the application of some kind of growth media to favor the development of a specific microorganism over the others, elevating a sample for the microorganism, which is of interest. This is usually attained by administrating nutrients or favorable environmental conditions, which permit the development of the desired organism.  

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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