there are sand dunes but not deserts
Hot deserts
In most deserts, sand dunes are only a small area covered by the desert.
Most deserts have areas of dunes. However, the Sahara and Arabian Deserts are probably the best known for their dunes. The Rub al Khali, or Empty Quarter, is the largest sand desert on earth. It is part of the Arabian Desert.
Both deserts and beaches have sand that is sometimes blown into dunes.
The deserts of Egypt are classified as hot deserts.
No, sand dunes are not the major feature of deserts. Hills, valleys, plains, mountains, mesas, arroyos, and many other features are more commonly seen in deserts than sand dunes.
in the deserts in the deserts
Sand dunes are generally found in only limited areas of most deserts.
Yes, there are millions.
Ireland would have some sand dunes around its coast. Ireland is not warm enough to have any deserts and so it does not have desert sand dunes.
Brazil has no true deserts, only a few regions of coastal sand dunes that resemble deserts.