And in all things is a sign, that indicates to His Oneness.
Al-Ghazali

And the Earth, We spread it out, and cast therein firmly set mountains, and We have made to grow therein of all beautiful kinds; to give sign and as a reminder to every servant, who turns to God.
Quran 50:78He causes to grow for you thereby herbage, and the olives, and the palm trees, and the grapes, and of all the fruits; most surely there is a sign in this for a people who reflect.
Quran 16:11He created the heavens without pillars, as you see them, and put mountains upon the Earth, lest it might convulse with you, and He spread it with animals of all kinds; and We sent down water from the clouds, then caused to grow therein (vegetation) of every noble kind.
Quran 31:10