A student investigated the effect of root space on plant growth. The student grew two groups of plants of the same variety. Both groups received the same amount of water and sunlight and grew in the same type of soil. The plants in group a were grown in cube-shaped containers that were 3 centimeters deep. The plants in group b were grown in cube-shaped containers that were 10 centimeters deep. The table shows the student's observations week plant group a (average height, cm) plant group b (average height, cm) 1 2 3 2 3 6 3 5 8 4 7 10 5 8 14 6 10 18 what was the effect of root space on plant growth based on the student's investigation? use the data from the table to support your answer. Explain how you would know whether this effect was likely due to environmental or genetic factors.