Question

Two identical flowering plants are planted in neighboring yards. One plant grows tall heathy, producing numerous pink flowers. The other is small, has brown, and never flowers. What could be the difference between the two plans?

Answer 1

1) They both are probably grown in a different environment 
2)The one that is brown probably doesn't get any sunlight 
3) The pink flowers probably get everything they need like water and sunlight
I hope this helps :)

Answer 2

They could have a difference in sunlight or water. There are many factors that could change how the plants are.