1.Add the BTB solution to each seed planter Use 2.5% hydrochloric acid to create a different PH concentration in each seed starter 3. soak and place radish seeds in the seed growers 4. observe the growth of seeds in each grower 5. neutralize the acidified water with calcium carbonate
High school - Reviving Soils and Lakes(学習)の評価数と総合順位の推移
評価数と総合順位の推移
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10
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5
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0
評価数(棒グラフ)、総合順位(折れ線グラフ)の推移
11/17
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11/19
11/20
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11/23
(順位)
1.7K
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1.8K
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1.9K
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