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.
Geothermal energy is energy that emits from the earth. It comes from magma and the radioactive decay of uranium, thorium, and potassium. Magma is hot because of the tremendous amount of friction and pressure to be found in the earth's subsurface area. While geothermal energy is massive in total, doesn't do too well when compared to the amount of energy we get from the sun, which wins by a factor of about 20,000.