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.
It is generally accepted that they formed from the fossilized remains of dead plants and animals[1] by exposure to heat and pressure in the Earth's crust over hundreds of millions of years.[2] This is known as the biogenic theory and was first introduced by Mikhail Lomonosov in 1757.t is generally accepted that they formed from the fossilized remains of dead plants and animals[1] by exposure to heat and pressure in the Earth's crust over hundreds of millions of years.[2] This is known as the biogenic theory and was first introduced by Mikhail Lomonosov in 1757.