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.
'Fat Albert' Colorado blue spruce (Picea pungens 'Fat Albert,' USDA zones 3 through 7) grows about 12 inches per year, reaching a height of 10 feet and width of 7 feet in 10 years. Its mature size is 10 to 15 feet tall and 7 to 10 feet wide.