Answer:
They help to show the driving force of the explosive eruptions and the viscosity shows whether the eruption would be explosive or not
Answer:
An outcrop consisting of several horizontal sedimentary rock layers represent a vertical time-series of geologic events. The textures of each sedimentary layer tells us the environment that was present at that location when the layer formed.
Explanation:
Environmental factors that influence the extent of crop agriculture are terrain, climate, soil properties, and soil water. It is the combination of these four factors that allow specific crops to be grown in certain areas.
Answer:
Cities have changed over the past 200 years due to using and finding more way to settle down. Now that a large portion of the population knows how to farm and doesn't have to hunt unlike our ancestor. We find ourselves at a standstill every day new discoveries are being made, and now we don't even have to search for anything. We can just go to the store to but things, or purchase a house. Yes, indeed the cities have changed in the past 200 years.
Explanation: