A normal adult thyroid gland weighs 10 to 20 g and receives blood from bilateral superior and inferior thyroid arteries and a small artery called the thyroid ima. The thyroid secretes two hormones. Thyroxine (T 4) makes about 90% of hormone production, and triiodothyronine (T 3) produces the other 10%.
Fast Growing Cold Hardy Tree. - Grows up to 5 ft per year! The Quaking Aspen is well known for thriving in cold climates and poor soil... but it's also a brightly colored tree with many desirable characteristics.
Colorado blue spruce, also called blue spruce (Picea pungens) grows at a slow to medium rate of less than 12 inches per year and up to 24 inches per year when young. It can take 35 to 50 years for a Colorado blue spruce to grow 30 to 50 feet.