Sulfonamides What are Sulfonamides. Sulfonamides are a group of man-made (synthetic) medicines that contain the sulfonamide chemical group. They are also called sulfa drugs (sometimes spelled as sulpha drugs or sulphonamides). Sulfanilamide was the first sulfonamide developed in 1906, although it was not used as an antimicrobial until the late 1930s.
Steam rising from the Nesjavellir Geothermal Power Station in Iceland. Geothermal energy (from the Greek roots geo, meaning earth, and thermos, meaning heat) is energy made by heat inside the Earth's crust. It's clean and sustainable.Although the Sun does heat the surface of the Earth, heat from inside the Earth is not caused by the Sun.team rising from the Nesjavellir Geothermal Power Station in Iceland. Geothermal energy (from the Greek roots geo, meaning earth, and thermos, meaning heat) is energy made by heat inside the Earth's crust. It's clean and sustainable.
Let's review. Geothermal energy is heat from within the earth that can be used for heating or to generate electricity. We can tap into geothermal reservoirs, which are underground concentrations of hot water and steam for use in heating and electricity generation.eothermal energy is renewable energy. It is also clean energy because it does not generate greenhouse gases. Geothermal energy is easy on the local environment and because it uses free heat from the earth, it is inexpensive to use. It can also be used domestically, which reduces a country's dependence on imported oil.