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.
Find out how coal is formed. Through animation, this video explains how, during the geologic period called the Permian, plant material accumulated in water and was buried by sediments where heat and pressure transformed it from the spongy substance known as peat to the hard carbon material known as coal.