nitrogen

Crop rotation involves a lot of questions, like a puzzle. There are so many different crops that farmers can choose to plant, and so many different combinations; the possiblities are endless.

The Northern Lights, also known as the Aurora Borealis, are waving ribbons of green, red and purple in the sky. These curtains of light can be seen as far south as the South Pole. In the southern hemisphere, however, they're called the Aurora Australis. They can also sometimes be seen in New Zealand or Chile.

Plants benefit from growing in good soil, and the addition of compost is an effective way to condition it.