In this experiment, the was intentionally manipulated. It is the independent variable.
The dependent variables that were measured were the

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. ph changes the ability of them he enzyme to dissolve in water.

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).