Climate change
Of course, this is a chemist.
of course the person who is excavating it or some worker
DEJ likely stands for "Damp-Proof Course Elevation Joint." It is a mark used in construction blueprints to indicate the specific location where a damp-proof course and elevation joint is to be installed to prevent moisture penetration in a building.
Astronomers believe Miranda's unusual surface features, such as its ridges and canyons, were caused by past geological activity like tectonic forces and cryovolcanism. These processes, likely triggered by tidal heating from its interactions with other moons and the planet Uranus, have reshaped Miranda's surface over time, resulting in its unique and chaotic appearance.
Science and reason
Pedestrians are approximately 40-50% less likely to be involved in collisions at roundabouts compared to traditional intersections. This reduction in risk is attributed to the slower speeds of vehicles and the design of roundabouts, which encourages safer interactions between vehicles and pedestrians. The circular design also enhances visibility, allowing drivers to see pedestrians more easily.
The likely word is "exotic" (strange, foreign, or unusual).
The likely word is spelled weird (odd, unusual).
The likely word is "idiosyncrasy" (an odd or unusual habit).
An unusual person who lives a boring life
Rare, but if there is an unusual heart condition it could happen.
Unusual, meaning strange, weird, odd, different, unexpected, etc., is spelled U-N-U-S-U-A-L.
Climate change
What is unusual about this city is a question that any visitor, vacation planner or tourist is likely to ask about the reason for spending any amount of time in a particular destination.
It's likely. Experimental aircraft are sometimes unidentified by observers. They may take on an unusual/novel shape in order to fly faster or stealthier. These kinds of experimental aircraft are, for obvious reasons, kept secret. They are identifiable by those who made them but not by those who see them.
Only if you would consider being a dwarf unusual in today's times. However, a dwarf reaching a mature age is much more likely today than back then.