The steepness of slopes on a volcanic mountain is determined primarily by: the relative amounts of pyroclastic debris and lava erupted from the volcanic vent. the initial temperature of the lava. the amount of rainfall in the area. the force with which the magma is pushed upward. none of these.
The South Asia subregion spans seven countries (Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan and Sri Lanka).[39] The areas of these countries vary from 30 000 ha (Maldives) to 297 319 000 ha (India).his subregion has a negative rate (0.13 percent per annum) of forest cover change, which is roughly double the negative rate of change for the Asia region (0.07 percent per annum) but is roughly half the negative rate (0.22 percent per annum) of change for the world (Table 23-1).
The climatic pattern varies from the wet monsoon to semi-arid and arid conditions. The climate of India is classified as tropical. In summer temperatures vary from 20 oC in the Himalayan region to more than 30 0C in the arid desert regions.April and May are the hottest months of the year, with temperatures rising to 50oC in some parts of the country.he climate of India is classified as tropical. In summer temperatures vary from 20 oC in the Himalayan region to more than 30 0C in the arid desert regions. April and May are the hottest months of the year, with temperatures rising to 50oC in some parts of the country.