Answer: syncretism
Explanation: natural mixture of different traditions (in terms of language, religion, cuisine etc.), we could use also words as "hybridity" or "hybridization". In the case of Brazil we can speak about mixture of African religious/animistic cults with Catholic religions and indigenous beliefs. Carribean cultures suffered the same degree of syncretism.
The largest SAND desert is the Sahara Desert. It is located in North Africa :)
Composite or strato volcanoes are made of alternating layers of ash and lava. These form the tallest of volcanoes.
Answer:
The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt. Now, day by day new technologies are invented, causing more pollution than in the past. It is important now because we are developing in very fast steps and something should be done.