Since the demand for woollen garments is confined only to the colder parts of the globe, woollen textile industry ismuch smaller and less widely distributed than the cotton textile industry. Two-thirds of the world’s woollen mill capacity and production are located in Europe.
The Thermosphere is located between 80 and 400 km above the mesopause. It contains electrically charged particles known as ions. It is therefore known as Ionosphere. The temperature here starts increasing with heights. Radio waves transmitted from the earth are reflected back to the earth by this layer. The International Space Station and other satellites orbit in this layer. Auroras are observed in the lower parts of this layer.