The fluid inside of the Extracellular Matrix is Extracellular Fluid. Extracellular Fluid is also called ECF. ECF is mostly tissue fluid. It is also made up of a large amount of intravascular fluid. The remaining smaller amount of ECF is transcellular fluid.
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Temporal isolation , behavioral isolation, and geographical isolation I hope I answered your question if not please try searching up or using further sources
A niche is an organism's role in a community.
What it eats, Where it eats, When it eats, and its job in that environment.