sentences: a hole is a kind of opening0 & sunlight is a kind of light ->  sunlight can not travel through an opaque object  light can travel through an opening & sunlight is a kind of light ->  sunlight can travel through an opening  sunlight can travel through an opening & a hole is a kind of opening ->  sunlight can travel through a hole  sunlight can not travel through an opaque object & sunlight can travel through a hole ->  sunlight can travel through a hole in an opaque object  sunlight can travel through a hole in an opaque object & a forest canopy is a kind of opaque object ->  sunlight can travel through a hole in a forest canopy  sunlight can travel through a hole in a forest canopy & a tree falling in a forest creates a hole in a forest canopy ->  a tree falling in a forest allows sunlight to travel through that forest's canopy  a tree falling in a forest allows sunlight to travel through that forest's canopy & large canopies / trees block sunlight from reaching the ground ->  a tree falling in a forest allows sunlight to reach the ground in some areas  if a living thing dies then the resources used by that living thing will become available & if a tree falls then that tree is dead ->  if a tree falls then the resources used by that tree will become available  if a tree falls then the resources used by that tree will become available & a tree requires sunlight to grow ->  if a tree falls then the sunlight that was used by that tree will become available  a tree falling in a forest allows sunlight to reach the ground in some areas & if a tree falls then the sunlight that was used by that tree will become available -> if a tree falls then sunlight becomes available to the surrounding plants