- Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC
- It almost seems like a giant broom is sweeping the sands of western Africa�s Sahara Desert out of Mauritania and into the Atlantic Ocean in this MODIS image from May 6, 2002. Fires are burning in the savannas to the south, in (clockwise from left) Senegal, Mali, Guinea, and Guinea Bissau.
- Chemical compound (Wikipedia)
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances. In this process, bonds between atoms may be broken and/or new bonds formed.
