Keep it simple and clear... Tell me an idea on what to write. I really don't know if it's chemistry or not TBH.

-Wildflowers are plants that grow on the forest floor. During a study, a scientist observed that wildflowers began to bloom before the leaves appeared on the tall trees above them and stopped blooming once the trees were full of broad leaves which blocked the sunlight.

-Evaluate this observation and explain a limiting factor this is affecting the wildflowers on the forest floor.