Rock is cause, and effect!
An amusing traveler answered with a smile.
Letting out a chuckle, I asked how so?
Reaching his hand for a rock from the street,
He rolled, it stopped after a moment.
He looked at me in the eyes, then walked away.
It was then, I understood.
Exerting force upon it, causes it to roll.
Where it lands, is effects…
Sowing a seed incurs cause.
Returning next summer, a sprout took its place.
⁠— this is effect.