Explanation

 The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

Explanation

The lungs are located on either side of the breastbone in the chest cavity 

Explanation

The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium.

Explanation

The antonym for retrieve is lose

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Explanation

White goods are a category of durable consumption goods, referring to large, long-lasting home appliances

White goods like refrigerators, washing machines, and dishwashers

They are built to withstand frequent use and last for several years. 

Explanation

Lebanon, located in Western Asia.

Capital: Beirut

Currency: Lebanese pound

Explanation

Erythrina cristina galli (Ceibo) is the National flower of Argentina. 

Argentina Capital is Buenos Aires.

Argentina Currency is Argentine Peso.

Argentina official language is Spanish.

Argentina located in Continent South America.

Argentina Primary Religion is Christianity (But Secular Country).

Argentina Head of Govt. is President – Alberto Fernández.

Argentina Parliament called National Congress.

Explanation

The Paracel Islands, also known as the Xisha Islands and the Hoang Sa Archipelago,

are a disputed archipelago in the South China Sea

Explanation