Yes, NATURES is a Scrabble word!

Letter values in Scrabble US: N 1, A 1, T 1, U 1, R 1, E 1, S 1.

Is it a valid word?

NATURES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

the essential qualities or characteristics by which something is recognized
a causal agent creating and controlling things in the universe
the natural physical world including plants and animals and landscapes etc.
the complex of emotional and intellectual attributes that determine a person's characteristic actions and reactions
a particular type of thing