Dunes which are curved and have their tails pointing into the wind are
Dunes which appear as more than a singular type are called:
According to the given question, we are asked to state the names and types of dunes which are curved and point towards the wind and the ones which appear as more than a singular type.
As a result of this, we can see that a sand dune is an accumulation of sand particles which are propagated by agents of air to one location and there are four main types of sand dunes of which parabolic and star dunes are part of them.
Therefore, the correct answers are parabolic and star dunes
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