Needs of Plants
How much water does a plant need daily? What do plants eat? How much sun does a plant need daily? Is there a certain type of soil a plant needs? How many plants are in Indiana?
Certified GKH Gardening Expert
Light (sun) requirements generally depend on the type of plant grown, as some varieties can thrive in little to no sun. As for the number of plants in Indiana---there is no surefire way to get an exact number but I'm guessing it would have to be in the thousands.
You have many questions and while I cannot answer them all, here are some articles that you may find helpful: https://www.gardeningknowhow.com/houseplants/hpgen/how-to-water-a-plant.htm