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.
Tips. 1  You can use just about any kind of apple in a pinch, but you'll have an easier time and get better results if you use a Granny Smith. 2  Choose a sharp knife that is easy to handle and be careful. I use a paring knife for peeling and general shaping, but switch to a small pocket knife for facial features.