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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flagItaly
86%
11%
2%
0%
36
flagGreece
80%
6%
3%
9%
31
flagAustralia
63%
33%
0%
2%
36
flagSwitzerland
63%
36%
0%
0%
22
flagLithuania
60%
30%
0%
10%
10
flagRepublic of Ireland
52%
35%
5%
5%
17
flagSouth Africa
46%
46%
7%
0%
13
flagUnknown
45%
35%
0%
20%
20
flagFrance
42%
42%
7%
7%
14
flagCanada
40%
45%
0%
13%
22
flagGermany
38%
49%
7%
4%
199
flagthe United Kingdom
38%
48%
1%
11%
154
flagAustria
37%
55%
7%
0%
27
flagthe Netherlands
37%
45%
8%
8%
24
flagPoland
35%
56%
6%
2%
13413
flagthe United States
34%
54%
2%
7%
438
flagthe United Arab Emirates
31%
37%
25%
6%
16
flagKenya
30%
70%
0%
0%
10
flagIndia
21%
63%
5%
7%
71
flagPakistan
14%
64%
14%
7%
14