~Hello there! ^_^
Your question: What is a group of islands clustered together in a large body of water..?
Your answer: A group of islands clustered together in a large body of water is called an archipelago.
Hope this helps! :D
Vikings or Christopher Columbus. One of those two (:
Death to plants and animals and humans
Answer
Continental crust is generally older than oceanic crust
Explanation
The average density of the continental crust is lower (2.6 g/cm3) than the oceanic crust(3.0 g/cm3). This allows the continental crust to float on the upper mantle. The rocks in the oceanic crust are younger than those in the continental crust. The continental crust is thicker( 35-70km) than the oceanic crust(5-10 km).
