A semi permeable membrane has a 2% salt solution on one side and 15% salt solution on the other side what will most likely occur

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.