Answer:
sand dunes
Explanation:
They are made in different ways but this maybe what you are looking for. It has to do with the wind as well.
The biggest doubling time of all the regions/continents in the world has Europe.
Europe is the only continent that has almost 0% population growth (as of 2014), which practically means that with this pace Europe will need an eternity to be able to double its population, so it makes it the continent with the biggest time needed to double it's population.
The answer would be all of the above
Answer:
True.
Explanation:
Moon revolves around the earth