Q: Fact 1: Aplant requires nutrients to grow. Fact 2: Food Potash is an essential plant nutrient. Given the two facts above, what do plants require to grow?

Select from:
(1). wind.
(2). Collagen.
(3). cellulose.
(4). grass.
(5). sunlight.
(6). moonlight.
(7). potash.
(8). photons.
A:
(7).