Ren had two pots each of the following types of plants: chili, tomato, and rose. All the plants in the six pots were roughly of the same age and were equally healthy.
He watered one pot of each type of plant with fresh water and another pot of the same type of plant with an equal quantity of wastewater. He measured the height of the plants every day for two weeks. What can Ren find out from his experiment?
i) Which of the above types of plants can be grown using wastewater.
ii) If wastewater gives better plant growth.
iii) If all the above types of plants require the same quantity of water.
Select one of the following: