Discussion: Week 4 biology

Do a web or library search to locate a research study about the effects of two or more environmental factors* that affect cellular respiration or photosynthesis (*examples: temperature, pH, sunlight, nutrients, carbon dioxide, heavy metals, UV light, air pollution, heavy metals, etc). Briefly describe the conclusion from this research study in your own words in not less than 150  and not more than 200 words. 

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