The trolleys have been reduced over the last decades, after their initial increase as a public transportation, when new and better ways were discovered/produced for transport, their decline has started.
The buses since their invention, had grown in number and became a very important part of every city's public transportation, and still are.
The rapid transit is the most recent one of the mentioned in here. It's popularity has grown, number increased, and is very practical because it is not causing traffic mess. It is very important transport asset nowadays and makes lives of millions of people much easier.
Earth was able to retain an atmosphere because of its gravity. It is <span>the same force that keeps us anchored to Earth. Molecules in our atmosphere are constantly moving, spurred on by energizing sunlight. If Earth were much less massive, gravity's grip would be weaker.</span>
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Hypothesis
Explanation:
I will answer this later but hope that the answer helped you
The most important thing that the designers should take into account are the potential earthquakes - the buildings should be able to withstand the shaking of the ground.
Additionally, Earthquakes often lead to fires, so the buildings should also be fire-proof; especially not made of wood.
Finally, the possibility of a tsunami should be considered.
Answer:
The type of rock can tell you if the land was formed by layers of sediment, lava, etc. Fossils can show how old they are and therefore how old the land around it is
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