Question

a line graph is the best way to represent the data in the table. what information belongs on the x-axis? salt concentration outside paramecium contractions per minute done paramecium contractile vacuole contractions salt concentration outside paramecium contractions per minute very high 2 high 8 medium 15 low 22 very low 30

Explanation:

In a line graph, the independent variable (the one being manipulated or categorized) is typically placed on the x - axis. Here, the salt concentration outside the paramecium is the independent variable (it is the factor that is varied, and we observe how it affects the contractions per minute). The contractions per minute is the dependent variable (it depends on the salt concentration) and would be on the y - axis. So the information that belongs on the x - axis is the salt concentration outside the paramecium.

Answer:

A. salt concentration outside paramecium