The root cause of Somali piracy lies in the threat that illegal fishing posed to the livelihoods of subsistence and commercial fishermen along the coastline. During the early 1990s, Somali subsistence fishing and the fishing industry coexisted with illegally-placed foreign fishermen in the vast Somali waters.
Answer:
Viscosity of Magmas
Viscosity is the resistance to flow (opposite of fluidity). Viscosity depends on primarily on the composition of the magma, and temperature. Higher SiO2 (silica) content magmas have higher viscosity than lower SiO2 content magmas (viscosity increases with increasing SiO2 concentration in the magma).
Explanation:
Mostly quartz feldspar and clay minerals; may contain fragments of other rocks and materials
