Answer: b
Explanation: Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock
The precipitation associated with a warm front typically arrives extensively ahead of the actual frontal boundary.
Rain transpires on the foremost fringe of a warm front. As warm air is slightly less viscous than cold air, it slowly rises over the cold air by gradual frontal lifting and permits precipitation to evolve ahead of the frontal edge.
Yet, while cool air at the surface lives forward of a warm front, relatively warmer air often is discovered above it as the warmer surface air after the front rises up and over the cool air below. If sufficient moisture is present, this can develop in precipitation along and forth of the front.
More about gradual frontal lifting :
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Answer:
An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. Earthquakes may occur naturally or as a result of human activities. Smaller earthquakes can also be caused by volcanic activity, landslides, mine blasts, and nuclear experiments.
Explanation:
Answer:
d. Homogenous
Paliwanag:
Ang isang pamayanang pangwika ay itinuturing na homogenous na pangkat ng mga tao dahil sa pagkakapareho ng wika, pag-uugali, at mga pagpapahalagang panlipunan. Ang pamayanang pangwika na ito ay tinatawag ding pamayanan sa pagsasalita. Ang pangalang ito ay ibinigay sa homogenous na pangkat ng mga tao na nakatali sa pamamagitan ng katulad na wika na sinasalita nila.
