Geography, class 7th, chapter 8 ,Give reasons
Answers
1. The Rainforests are depleting because of the following reasons:
Developmental activities have been started in a big way, resulting in the cutting of rainforests for various purposes.
The indigenous population has been pushed out who practiced conservation activities of forests and wildlife.
Industries are being set up after clearing the forests.
Lumbering has developed.
Topsoil is washed away during rains and lush green forests turn into barren lands.
2. Paddy is grown in the Ganga-Brahmaputra Plains because of the following:
Deep loamy soil is found in these plains due to the deposition of silt by the rivers for thousands of years.
Rivers in floods spread a new layer of alluvial every year. Hence it does not require manuring.
Canals from rivers supply ample water for irrigation of paddy fields during the dry season.
The lower portion of the plains receives adequate rainfall.
Cheap labour is available from the densely populated plains.
Means of transportation are developed to raise the movement of paddy and rice to the nearby markets.
New technologies are being adopted by the farmers because they can afford it due – to their sound financial position
Answer:
ii) paddy is grown in the ganga-brahmaputra plain because the soil in there is clayey and fertile because of flowing river water and minerals in it and paddy grows in clayey soil only.