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.
The Norway Spruce are fast growing evergreen trees / Grows to 150 feet. 1  Will reach 6' in 6 to 7 years - starting with a 3 year seedling. 2  Needles are 1 long, dense and dark green. 3  Valued highly for ornamental and timber. 4  These evergreen trees are excellent windbreakers. 5  Not good for cut trees.