Using complete sentences, compare and contrast subway systems with elevated train systems.

Subway is more expensive but doesn't impact as much as an elevated system

Explanation:

Subway Systems

Disadvantages

- It's more expensive, and slower to construct

- They require more technical complex techniques due to the impact it can generate, like geologic and aquifer studies.

Advantages

- It allows for better interconnection in the city with other means of transport.

- Doesn't alter current urban organization like Streets.

- Its natural and social impacts are lower, it doesn't affect the exterior and its isolated from atmospheric variables.

Elevated train System

Disadvantages

- Seismic activity can affect the building making it prone to a natural disaster.

- Occupies ground-level space, Noice and visual contamination.

- Being exposed to atmospheric variables like precipitation makes it vulnerable to damages, lost invisibility, and potential accidents,

Advantages

- its easier to construct,

- The studies required are not as complex, they are often focused on location studies, like not busy streets or intersecting buildings.

- Non-operational costs are lower.