Focusing primarily on both the understanding of our natural and man-made environments, environmental science degrees draw from diverse fields of studies and require a strong background in the more traditional sciences: biology, physics, chemistry, geography, ecology, and even biotechnology.
When and how to pinch back mums. If you decide to prune your mums, you can start pinching stems in spring when the plants have reached a height of about 6 inches. To pinch them back, simply grab a stem between your thumb and index finger about 2 to 3 inches above the base of the plant and just above a leaf and pinch it off.
1 Using snuff is also called dipping. A pinch of snuff is placed between the lower lip and gum or cheek and gum. Dry forms of snuff can be sniffed into the nose.  Chewing tobacco. This consists of loose tobacco leaves that are sweetened and packaged in pouches.