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.
Each coal bed may be inches to feet thick, formed by the accumulation and compacting of thick piles of dead plant material. It has been estimated that, if all the vegetation living on the earthâs surface today were converted to coal, it would amount to only a small fractionâperhaps 3 percentâof the earthâs coal reserves.2.