What would be a natural disaster that really harms grasslands?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

Why did the belgian parliament pass laws to decentralize its government? a. to increase trade with neighboring luxembourg b. to decrease the political power enjoyed by the flemish c. to enable belgium to join the european union d. to reduce tensions between belgium's two main ethnic groups

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."