In Experiment 2, how many seeds were planted in each clay pot?
F. 4
G. 14
H. 21
J. Cannot be determined.

Experiment 2
The students repeated Experiment 1, with the following changes; each pot contained a different soil type, and no compost was used. This experiment was begun at the same time as Experiment 1. The results of Experiment 2 are shown in Table 3.

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Soil type Sand (1) Potting soil (2) Soil from field near the school (3) Mixture of sand and potting soil (4) Table 3 Average plant height (cm) 21 days 14 days 2.4 3.9 3.2 3.1 2.9 4.7 4.2 3.3 28 days 3.4 5.3 4.3 4.2 Average number of leaves 14 days 1 3 2 2 21 days 28 days 3.5 6 4.5 2.5 4 3.5 4 5.5