“Ecosystems are distinct biological societies made up of biotic, living elements like plants, animals and organisms and a physical environment – the abiotic components – such as soil, water, air, sunlight and climate. The physical interactions and symbiotic relationships developed between all these elements in an ecosystem not only define it, but bring distinctive focus to the cycles in nature. The role and function of water in the ecosystem is to provide the lifeblood of the community.” Grade 11 students investigating the level of water pollution in various locations. The methylene blue solution was used to test for the presence of oxygen in water.
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