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.
The time gap between spring and neap is approximately 7 days. The neap tides refers to a period of moderate tides when the sun and moon are at right angles to each other. The spring tides are high tides.
Heifer – a cow that has not borne a calf, or has borne only one calf. In North America, a typical farm has about 100 milk cows and as many young female stock called heifers. The heifers are raised as replacement cows.