Deserts

desertification is a situation in which an entire area becomes a desert in a short span of time whereas desert encroachment involves a gradual advancement of a desert into an area.

The question cannot be answered as it is virtually impossible to perform a census of cacti in such a vast desert area.

tropical rain forest

A desert is an area with a small amount of precipitation (rainfall) per year. Since the polar regions are so cold they get next to no rainfall so are considered desert due to that fact.

The Sahara is a huge, hot Desert located in northern Africa while the Ladakh Desert is a much smaller and quite cold desert located in India along the Himalaya Mountains.

Stationary high-pressure cells

The Sahara covers about one third of the African continent.

There are cold or cool deserts in Asia, South America, North America, Africa and Antactica.

Tall grasses and large herbivores are part of the grassland biome and not a desert.

Arizona has deserts, Alaska does not have any major true deserts.

Both Alaska and Arizona have deserts even though they are located in two totally different environments.

Cacti are found naturally only in the Americas. Most live in deserts but some live in grasslands, scrub and even in rain forests. There are also cacti growing in Africa, Asia and Australia but they were introduced by man and not naturally occurring. In these areas they frequently become a noxious invasive species.

Leaves are narrow ovals so less moisture is lost when there is dry air.

Large roots to obtain maximum amount of water from the ground.

Sheds leaves in dry season so that less moisture is lost.

we have to live in forest because in desert there is lack of water and food the desert climate in day is very hot and in night is very cold so,the desert climateb and conditions are not suitable for us so we choose to live in forest

Tiramisu

School teachers, store owners, firemen, doctors, nurses, mechanics, police, secretaries, businessmen, and any occupation you can think of live and work in the desert. Millions of people live in cities and towns around the world that are located in deserts and they have the same occupations as people who do not live in deserts.

Some species of cactus do best when they grow in the shade of a shrub or other leafy plant. That is the only 'shelter' they might have in the desert.

Most of the continent of Antarctica is desert.

The deserts are classified as hot subtropical deserts (Mojave, Sonoran and Chihuahuan) and cold winter deserts (Great Basin and Colorado Plateau).

The Kalahari Desert.

Desert animals have had thousands of years to adapt to the harsh environments. Humans and other such animals have not had the chance to adapt to desert climates like all desert animals. In sand deserts, camels -for example- have adapted to the lack of water, and do not need to drink very much fluid and can survive without water for long periods of time. Many other desert animals also have this ability. In snow deserts, many animals have gained long fun coats or think blubber which keeps them warm in the freezing climate and can also help to protect them. They are well prepared, and this is why they do not die because of the desert. Of course, they will eventually die, though.

they take on a Jim Carey role and like to act as their enviorment

Every desert is different when it comes to precipitation. However, a desert is defined as a region that receives less than 10 inches (250 mm) of rain per year. That would be about 0.8" per month. However, most deserts go months without rainfall and receive most of their precipitation during an annual rainy season.

A desert receives less than 10 inches (250 mm) of rain on average per year. Some deserts receive virtually no rainfall.