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

โดย
สั่งพิมพ์
ฝัง

ลีดเดอร์บอร์ด

สไตล์ภาพ

ตัวเลือก

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