Find the Aleutian trench that is circled on the map seen here. This area is the site where two tectonic plates meet. Islands hav
e formed due to volcanic activity; tsunamis are a reasonable occurrence; there is a great trench here, the Aleutian Trench. What is this region called where the heavier, more dense crust sinks beneath the lighter crust. A) subduction zone
B) divergent oceanic-continental plate boundary
C) convergent continental-continental plate boundary
D) divergent oceanic-oceanic plate boundary
There are guard cells surrounding each stoma that cause them to open or close throughout the life cycle of the plant. This occurs in response to water and ions concentration in the plant cell.
