Cotton is one of the most important cash crops supplying raw material to an extensive textile industry. It is a widely grown crop in areas of warm subtropical climate, typically on the equatorial side of the mid-latitudes. Among the cotton producing countries the first rank goes to China. The major areas of production in China lie in the floodplains of the major rivers in the northeastern part of the country.
An isohyet or an isohyetal line is a line that joins places of same rainfall on a map within a given time period. A map of isohyets is also known as an isohyetal map.
The zebrafish is a freshwater fish belonging to the minnow family. It is native to South Asia, it is a popular aquarium fish, frequently sold under the trade name zebra danio. It belongs to India and Sri Lanka.