Magma that squeezes into a horizontal crack is called a sill. Magma that squeezes into a vertical crack is called a dike.
They are both considered volcanic rocks that form into layers of another rock. In nature, the difference is that sills are horizontal while dikes are vertical.
Answer:
Landslide also called as Landslip, is physical displacement of geomaterials, it is natural / man induced and causes removal or erosion of the part of land.
Explanation:
- A landslide is a form of mass wasting including a wide range of ground movements including debris fall, slope failure, and mudflows.
- Some landslides occur under oceans called as submarine landslides. Gravity is a prime driving force, and some are associated with earthquakes and rainfall.
- Physical and chemical weathering also takes place as a result of the landslides as it erodes the surface of the object whatever it comes in contact with.
- Landslides caused by humans have led to Deforestation, blasts in mining and vibrations from machinery, and habitat loss.
- Landslides occurring at greater depths have the potential to trigger large Tsunamis and destroy natural harbors.
- Landslides characterized by debris flows are full of mud, soil rocks that move with great speed and are often hazardous.
Answer:
It took climate change, fertile river valleys, domestication of crops and animals so that the hunter-gatherers became sedentary farmers.
Explanation:
Initially, all humans were hunter-gatherers. This was due to multiple reasons, with one the biggest one probably being the climate which was not enabling good conditions for the hunter-gatherers to transform their lifestyle. All other conditions needed were stopped because of the climate conditions, so humans had to do what they could to survive in those conditions.
About 10 years ago though the bad climate conditions ended, or rather the Ice Age ended. This resulted in a much warmer climate, which in turn created much more water bodies like rivers and lakes, much more vegetation, and they contributed to the creation of much more fertile soil.
With these conditions in place, the humans quickly saw that there is huge potential in some plants and animals, so they started to farm them, select the ones with the best characteristics, and gradually producing enough food for themselves. With the food problem solved, humans didn't have the need to wonder around all the time, so they started abandoning the hunter-gatherer lifestyle and started settling in one place.
The mesopause, the temperature minimum that marks the top of the mesosphere, is the coldest place on Earth and has an average temperature around −100 °C (−148.0 °F; 173.1 K). your welcome lols.....
Answer:
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