The earth´s atmosphere protects Earth from meterorite impacts.
D. Mental Map
because: a mental map is how you perceive your area
Answer:
Regionalism
Explanation:
Regionalism is one of the political ideologies that focuses on the welfare and progression of a region particularly. The region can be a divided on the terms of religion, administration, culture and language. Regionalists intend towards the progression, development and upliftment of the people living in the region. This helps in brining the state, society and people come in contact and share certain responsibilities towards each other.
Lava flows are the least hazardous of all processes in volcanic eruptions. How far a lava flow travels depends on the flows temperature, silica content, extrusion rate, and slope of the land. A cold lava flow will not travel far and neither will one that has a high silica content. Such a flow would have a high viscosity<span> (a high resistance to flow). A basalt flow like those in Hawai'i have low silica contents and low viscosities so they can flow long distances. Such a flow can move as far away as 4 km from its source and have a thickness of 10 m (Bryant, 1991). These flows can move at rates of several kilometers per hour (Scott, 1989). </span><span>More silica-rich flows can move as far away as 1.3 km from their sources and have thicknesses of 100 m (Bryant, 1991). These flows can move at rates of a few to hundreds of meters per hour (Scott, 1989). If a lava flow is channelized or travels underground in a lava tube then the distance it travels is greatly extended.</span>
