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.
A Pinch: To add a pinch of something as a cooking ingredient. Use your thumb, index finger and middle finger to grab the spice. Small Pinch: To add a small pinch. Use your thumb and index finger only to grab some spice, then add it.