Unique features are things that you do not see anywhere else. Some examples of unique features are, parts of a face, a birthmark, or something on art work.
Some unique features of Mercury are It is the fastest orbiting planet It has almost no atmosphere The Heat on Mercury escapes fast because of thin atmosphere Caloris Basin is an 800 mile wide depression. Largest impact crater in the Solar System
the unique features of the taj mahal are first it is the finest example of mughal architecture. Also, the style combines Persion, Indian, Isalamic, architectural styles.
I don't know if these are all of the unique features, but they have skin, they have gills and lungs in their lifetime, are born in water and later migrate to land, are coldblooded, and can breath through their skin
Typically, the most unique features of your work history should include any promotions you had received. Moving to a higher position is a very good accomplishment.
Mars does have a few unusual features. Some include its red color and polar ice caps. There are also areas of this planet that change color which is a unique feature.
Humpback Whales has unique features that we can distinguish easily from other whales. Their distinct features are their long fins and their broad flat head.