Experimental group: plants received 2 hours sunlight daily, students were given ice cream, adults drank coffee before work for 5 days, students studied 1 hour every night for 2 weeks, plants were given fertilizer once a week for 8 weeks, Controlled Group: plants were kept outside all day and night, students were not given ice cream, adults were not given coffee, students did not study, plants were not given fertilizer,

Controlled Experiments

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