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.
Such islands are formed of peaty masses of vegetation that rise up from the floors of shallow lakes due to the accumulation of gases as a result of decomposition of the vegetative matter. Such islands are ephemeral in nature and stay afloat till the gasses dissipate following which the vegetation sinks into the lake.