Sahara Desert

The Sahara Desert's elevation varies throughout the region, ranging from below sea level in some areas to around 3,000 feet (900 meters) above sea level in others. Overall, the average elevation of the Sahara Desert is around 1,300 feet (400 meters) above sea level.

Estimates on the population of the Sahara Desert vary from between 2.5 million to 4 million people.
Thousands of people live in the sahara but most are very poor and have diseases. they do not get much water or mendicine so they die

Aluminum was discovered in 1825 by Hans Christian Oersted, Denmark

well i don't know. go to Google and find out there.

The basics of it is that sunflower seeds get dropped all the time but usually land on hard ground and never make it under the soil. By highways and dirt roads and the edge of planted crop fields the soil gets turned over quite often, therefore putting the seed in the ground.

Wild flowers can grow in a variety of habitats including meadows, fields, forests, and along roadsides. They often thrive in areas where they receive adequate sunlight, water, and space to grow freely without human intervention. Each species of wild flower has specific preferences for soil type, moisture levels, and sunlight, which determine where they can be found growing naturally.

Man can influence desert climate through activities such as deforestation, urbanization, and industrialization. These activities can lead to changes in regional temperatures, precipitation patterns, and air quality, altering the natural balance of the desert ecosystem and potentially exacerbating desertification.

The Sahara covers most of the northern third of Africa.

People have been traveling for thousands of years. Organized travel for leisure and cultural exchange became common during the Roman Empire, with the development of roads, inns, and organized tours. However, travel for trade and exploration has been happening since ancient times.

they were lucky. I read an article in one of my journals. What I am going to do for this answer is; superstock.com/stockphotography/cave/printings. I will be back to this one because I was interested that the Saharan climate used to be much different.

The "Sahara Desert" is a broad expanse of northern Africa, roughly from about 10 degrees north latitude to about 23 degrees north latitude. There are a number of smaller "regional" areas that are often lumped together by the term "Sahara".

The precise amount of sunlight would vary by date and by latitude, but let's use 20N and December 21. That spot gives us about 10 hours 55 minutes of sunlight for the shortest day of the year. That close to the equator, there won't be a large difference in the duration of sunlight during the course of a year. At the equator, of course, the length of the days and nights are pretty much equal throughout the year.

The US Naval Observatory's web site has a calculator that can generate the precise time of sunrise and sunset for any location and date. See the link below to generate your own calculations for the precise location and date you're interested in.

I would expect to find camels in a Sahara caravan.

Extinct means the animals no longer exist so there can be no extinct animals in the Sahara. If there were, they would not be extinct.

The Sahara Desert is considered an ecosystem because it comprises a complex network of living organisms and their physical environment, interacting in a delicate balance. It supports a variety of species, including plants, animals, and microorganisms, all adapted to its extreme conditions, such as high temperatures and low rainfall. The interactions among these organisms, along with the desert's unique climate and geography, contribute to its distinct ecological processes. This makes the Sahara a dynamic and functional ecosystem despite its harsh environment.

I asked a similar question of Dr. Christopher S. Swezey in 2001:

Hi - I recently came across your letter to Science in the 10/8/99

issue and thought you might be able to answer a question I have had

since visiting the Sahara in 1985: how deep is the sand at its

deepest? Or how deep at the greatest depth that has been sampled or

imaged? Are your thermoluminscence data from drilling core samples?

Thanks in advance for satisfying my idle curiosity.

--

Gantt Galloway

Here's the answer he gave me:

Much of the Sahara is characterized by bare rock, and the sand in the

Sahara tends to occur in discrete groups (usually topographic basins).

Large areas covered by sand are called sand seas or "ergs." Within ergs,

however, the amount of sand cover is variable. Dunes take on different

shapes, as a function of wind characteristics and the amount of sand

available. Barchan dunes (small crescentic dunes) form where the wind is

unidirectional and where there is not much sand available. The interdune

areas associated with barchan dunes consist of bare rock or some other

non-sandy substrate. In contrast, star dunes form where the winds are

multidirectional and where there is a lot of sand available.

I am most familiar with the Grand Erg Oriental (Great Eastern Sand Sea) of

Tunisia and Algeria. This erg is characterized by barchan dunes and other

small linear dunes in the north, larger dunes with various linear and

grid-like shapes further south, and star dunes at the extreme southeastern

part of the erg. The tallest star dunes of this erg are 320 m high, and

the interdune areas around the star dunes are filled with sand (Star dunes

in most other regions of the Sahara are not as tall as the star dunes of

the Grand Erg Oriental, so I assume that the sand cover is less thick in

these other regions). I am not certain how thick the sand would be if you

drilled a well in the middle of an interdune area among the Erg Oriental

star dunes (maybe 150 m, maximum?). I do know that the dunes of the Erg

Oriental rest on top of sandstones of Miocene age (~5-23 million years

old), that these sandstones are exposed in the interdune areas to the

north. Some oil companies have drilled wells in the southern part of the

sand sea, but their targets are very deep and they rarely report the

thicknesses of the younger sediments near the surface.

My thermoluminescence dates from the Grand Erg Oriental were from small

outcrops on the northern margin of the erg, where wind-blown sand deposits

interfinger with lake and river deposits. I chose this area because it is

a basin that lies below sea level, and is still subsiding. I thought that

this might have the oldest record of wind-blown sediments in the Sahara. I

found out, however, that most of these sediments are relatively young

(<18,000 years old), and that these relatively young sediments rest

directly on top of much older Miocene sandstones. This pattern of

relatively young sediments (thousands of years old) resting on top of much

older sandstones (millions of years old) is consistent with what is

observed in most of the rest of the Sahara. If I were to go back to the

Sahara today and look for the oldest record of wind-blown sand, I would

probably look in the area of Lake Chad (another basin that is subsiding,

and filling up with sediments).

Anyway, that may be more information that you wanted. I did most of my

work in the Sahara when I was in graduate school (Univ. of Texas at Austin,

and Univ. Louis Pasteur in Strasbourg - France). When I wrote the letter

to Science, I was employed by British Petroleum in Texas, but about a year

and a half ago I quit BP and took a job with the U. S. Geological Survey.

I am currently working on putting together a story on the origin of the

Sahara Desert, and I am also working on various projects associated with

the Appalachians.

Thanks for contacting me, and let me know if you have any other questions.

- Chris.

Its about 5000km away

The Sahara desert IS NOT hot all the time.Because the temperature in there always be changes.

Example : In the afternoon,the Sahara desert is very hot.But,in the night,the temperature in the Sahara desert changes be colder.

Sahara desert doesn't have much of the agriculture.This happens because the climatic conditions in Sahara doesn't support the growth for plants.Eventhough plants like cactus and date palm tree grow here.These plants have long roots to absorb water from the deep soil and they have spine like leaves or sometimes no leaves at all for preventing transpiration(loosing water)through leaves.

The Western Desert is 262,000 square miles. It is made up of canyons, dunes, and oases. The Western Desert is located in Egypt.

Cacti are native to the Americas and are not found naturally in the Sahara Desert.

i dont know you tell me okay.

The Sahara desert covers a vast area so there are variations between regions. The Sahara desert is the hottest place with average temperatures over 86f/30c. Daily variants have been recorded as being as extreme as being between -5c/31f to over 100f/37.5c

The highest temp in the Sahara is 136 degrees and the lowest temp in the Sahara is 86 degrees

Since you need a grade you need to do it. We don't help you cheat and that is what you are asking us to do. The only way you will learn is by using your brain, not mine.