What mainly characterises the landscape of the Sahara desert?

it is rocky
it is sandy
it is grassy
it is mountainous
Most of the Sahara consists of rocky hamada; ergs (large areas covered with sand dunes) form only about 20% of the total area.
Kasia
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Very interesting!
reach: rather globalAfricaAlgeriadesertsdeserts of Africadeserts of North Africageographygeography of Africageography of North AfricanatureNorth AfricaSahara

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it is rocky
it is sandy
it is grassy
it is mountainous
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flagGreece
79%
8%
2%
8%
34
flagItaly
72%
23%
3%
0%
55
flagAustralia
56%
41%
0%
2%
46
flagRepublic of Ireland
51%
34%
6%
6%
29
flagUnknown
45%
35%
0%
20%
20
flagSouth Africa
42%
52%
5%
0%
19
flagNigeria
41%
58%
0%
0%
17
flagGermany
40%
50%
5%
2%
501
flagSwitzerland
40%
53%
2%
2%
45
flagthe Netherlands
40%
46%
6%
6%
30
flagthe United States
38%
51%
2%
7%
527
flagthe United Kingdom
38%
50%
1%
9%
216
flagPoland
37%
54%
5%
2%
14711
flagAustria
36%
47%
15%
0%
92
flagFrance
36%
52%
4%
8%
25
flagCanada
27%
60%
0%
12%
33
flagthe United Arab Emirates
27%
38%
22%
11%
18
flagKenya
22%
72%
5%
0%
18
flagPakistan
18%
62%
12%
6%
16
flagIndia
17%
61%
10%
9%
98