Treatment of hypothyroidism with levothyroxine is effective, but starting doses vary. There are two strategies for initiating levothyroxine in healthy adults younger than 65 years: low-dose (50 mcg) and full-dose (1.6 to 1.7 mcg per kg).
The only good example of this is chalk, which is made from the compacted shells of tiny marine organisms called diatoms. Other than that, animal and plant remains do not tend â¦to form rocks, although the hard parts may form fossils.
America is the Saudi Arabia of Coal Plant fossils of West Virginia are examples of the fossil flora that comprise the vast coal reserves that are typical in the Eastern United States. Coal is formed from ancient plant material accumulating over long periods of time in swamp conditions so devoid of oxygen that bacteria could not exist to cause decay. Being composed almost entirerly of plant fossils, coal is in effect concentrated sunlight, and is one of our most important fossil fuels. The United States as a whole has more recoverable coal resources than any other country on the planet-- over 262 billion tons-- enough to last over 200 years!