Duckweed growth declines in a pond. Hypothesis 1 states that…

Duckweed grоwth declines in а pоnd. Hypоthesis 1 stаtes thаt low pH causes the decline. Hypothesis 2 states that low nitrate causes the decline. In the figure, the control condition is pH 7 with normal nitrate, the low pH condition is pH 5 with normal nitrate, and the low nitrate condition is pH 7 with reduced nitrate. In 3 to 5 sentences, explain which hypothesis is better supported under the tested conditions, why the evidence does not prove that hypothesis is the only explanation, and describe one additional investigation that would strengthen the conclusion.