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.
The following Christmas Tree species or types are sold and grown in the United States. Deodar Cedar â Cedrus deodara â short, bluish-green needles; branches become pendulous at the tips; native to Himalayas; Deodara wood in Asia was used to build temples.