Father of medicine: This Greek physician is credited as the first to believe that diseases are caused naturally and is still known for an oath that doctor's take
Hippocrates
Lion
Lionness

The most famous gaming duo
Mario Bros.
Pakistan has its own set of Twin cities including the capital and this other city
Islamabad-Rawalpindi
This bright green fruit is featured in pavlova, a dessert from New Zealand
Kiwi
Of natural: This word you'll find before intelligence
Artificial
The human body part the hour, minute and second counters are referred to as
Hands
Father of Economics: This Scottish Philosopher is known for his "invisible hand" theory
Adam Smith
Horse/Zebra
Mare
These artists known for songs such as "Year 3000", "Sucker" and "Only Human"
Jonas Brothers
Buda and Pest were two separate cities until they unified in 1873, in this modern country
Hungary
On an Italian menu this term describes pasta with a sauce of eggs, cream, parmesan & bacon
Carbonara
You pronounce the G in malignant, but not in this happier medical antonym
Benign
In an old-fashioned grandfather clock, it swings back & forth regulating the time & causing the tick tock, tick tock
Pendulum
Father of Modern Science: Albert Einstein gave him this title for pioneering the experimental scientific method and shifting humanity's understanding of the universe through rigorous observation, mathematics, and empirical evidence
Galileo Galilei
Fox
Vixen
Before they built airplanes, these siblings sold & repaired bicycles in Dayton, Ohio
Wright Brothers
Brazzaville of the Republic of Congo is one half of the world's closest pair of national capitals, staring at this other capital across the Congo River
Kinshasa
The Danish equivalent of this Swedish array of food is the "kold bord"
To remain or maintain rather than doing this, like King Amadeus of Spain did in 1873
Abdicate
Watch and clock advertisements usually set the hands to roughly this time because the hands frame the brand logo at the top of the dial and resemble a smile
10:10
Father of Geometry: Famous for his book "Elements" he once reportedly responded to a student who questioned the value of having to learn Geometry with "Give this man a coin, since he must make a profit from what he learns."
Euclid
Mole/Otter/Panda
Sow
German brothers Wilheim and Jacob were authors better known under this name
Brothers Grimm
Valga was split from its twin, Valka, in 1920; however, as both Estonia and this country joined EU's open border zone they now have been reunited
Latvia
This Greek dish typically consists of layers of eggplant & ground lamb or beef topped with a white sauce
Moussaka
Divest: To support with a one-time grant or award, as one might do for a college
Endow
This crystal which is cut into a microscopic tuning-fork shape that vibrates exactly 32,768 times per second when electricity flows through it, is a core part of the working mechanisms of some wristwatches
Quartz
Father of Microbiology: This 17th century Dutchman discovered bacteria with a home-made microscope
Antonie van Leeuwenhoek
Donkey
Jennet/Jenny
(Male being Jack/Jackass)
This Vaudeville comedy troupe
Marx Brothers
Minneapolis and this other US city are known as "The Twin Cities" they even have a baseball team known as the "Minnesota Twins" and are separated by the Mississippi river
St. Paul
This salad of bulgur wheat, onions, tomatoes, parsley & mint is a classic dish of the Middle East
Tabbouleh
To misunderstand is an antonym for this word, which I understand is also a unit of nautical measurement
Fathom
Known as the "Heart" of the clock it is a mechanical linkage in mechanical watches and clocks that gives impulses to the timekeeping element and periodically releases the gear train to move forward, advancing the clock's hands
Escapement