One autumn, a beech seed blows into a sunny meadow. Following a cold, wet winter, it sprouts. The seedling grows into a sapling. The sapling grows into a taller tree. After several years, it grows lateral branches. Each spring, these leaf, making a shady, cool space under the tree. Over the years, leaf litter decays, forming deep, rich soil. Nevertheless, over time the population of meadow grass under the tree declines. What limiting factor has affected the grass's growth?

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

i got you i did it ya know what it is just needing to fill this in for a quick task!

i think its both a and b