It is formed through pyroclastic rock fragments as it builds up it makes a cinder cone. I hope that helps...
Soil would be #4 because it absorbs a lot so I think you put it backwards
It becomes a metamorphic rock, hence the name. Its "metamorphosis" is brought on by the heat and pressure.
Weathering is described as a passive agent of landform development because it is not directly affecting it.
The one that directly affect the landform are wind, water movement, and tectonic activities. Weathering only affect the formation of these factors.
So that other animals will think they are poisonise and wont eat them