1.2 Grade 10 learners investigated the effect of temperature on the growth of cucumbers. Ten plants were used placed in different types of pots for the investigation. The light intensity was kept constant. The same type of soil was used. The average growth of the cucumber was recorded. The table below shows the results of the investigation Temperature (°C) 10 15 18 20 24 28 30 40 Average yield/growth (kg) 9 1.9 5.7 9.9 7.9 6.8 6.1 1.9 1.2.1. State the aim of this investigation. (2) (2) 1.2.2. At what temperature was the greatest growth recoded?​