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.
Plants can âdrownâ for lack of air in clay soil, and they may die from lack of water in sandy soil. The best soil for growing most plants is loam, which is soil that is made up of about equal parts of clay, sand, and silt. Soil forms as rock is broken down by weathering and mixes with other materials on the surface.