Most everyone knows that we use proteins, carbohydrates and fats for energy. Calories are measurement of a unit of heat or food energy. For example, we can achieve four calories per gram of proteins and carbohydrates, and nine calories per gram from fats.
Tree Variety. Virginia pine (Pinus virginia) is the major Christmas tree species for the acidic soils found in East Texas. A grower can produce a 6- to 8-foot Virginia pine Christmas tree in 3 to 5 years, depending on soil and climatic conditions.
Chalk Maple. Chalk, or Chalkbark, maple (Acer leucoderme) is another variation of the sugar maple that is grown in the South (USDA zones 5 through 8). It is a smaller tree, reaching 25 to 30 feet tall and 15 to 30 feet wide, making it a good choice for patios and decks.ugar maple (Acer saccharum) grows 50 to 80 feet tall and up to 50 feet wide. It's a slow grower, about 12 inches per year. In the fall, its palmate leaves put on a spectacular show, turning a range of colors from red to yellow to orange. It's an excellent shade tree; its dense canopy supplies heavy shade to a yard.