Differences i

Differences in microcosmic, mesocosmic and macrocosmic experiments are due to the time during which it is necessary to observe the condition of similarity of experimental ecosystems to mothers' ecosystems. The larger the volume of the experimental ecosystem, the longer the similarity time for the main parameters studied.

Thank you so much sir

These are relative and arbitrary concepts. Specifically, the size of the organism defines scale. A microcosm for a dragonfly larva could be the same size as a mesocosm for a waterflea and a macrocosm for bacteria. Best to look at the for the organisms you are studying and see ehat others have used for your scale and what they called their units. Best of luck in your work.

Declan