There is a species of starfish called the crown of thorns. this species is responsible for killing coral reefs around the world. if you want to find out how these species have become so abundant around the world, who would you call?

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere