list the factors affecting the natural vegetation of a place .
why do the types of vegetation vary with altitude in a mountain range?
write a short note on hot desert vegetation

The factors that affect the natural vegetation of a place are altitude, temperature, moisture, slope and thickness of soil.

Types of vegetation vary with altitude in mountain due to exposure to sunlight, moisture and temperature.

Desert vegetation mostly consists of thorny bushes. Vegetation cover is scarce in these regions because of scanty rain and excessive heat. The vegetation has long roots to reach for water at great depths. Xerophytes like cacti have special mechanisms to store and conserve water, such as few or no leaves and fleshy stems.