2019 Year 12 IB Extended Essays

Graph 2: Mean Height of Wheatgrass when grown in different concentrations of NaNO3 over a 20-day period

Mean height of Wheatgrass grown in different concentrations of Sodium Nitrate

25

20

15

10

Height of Wheatgrass/cm (0.05 cm )

5

0

0

2

4

6

8

10

12

14

16

18

20

Time in Days

0M 0.0068M 0.0274M 0.1095M 0.4381M

17