What is a series of predictable changes that occur in an ecosystem that lead to the sustainability of life? a) biotic b) abiotic c) succession d) climax community

The correct answer is:   [C]:  

               →       " succession " .

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with pass cost = $25

without pass cost = 3x number of days going the the class

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme