latests
What natural process converts atmospheric nitrogen into ammonia?
A) Photosynthesis
B) Nitrogen fixation
C) Respiration
D) Denitrification
Nitrogen fixation—by bacteria or lightning—converts atmospheric N₂ into biologically usable ammonia or nitrates.
latests
A)
Galileo
B)
Copernicus
C)
Kepler
D)
Newton
Nicolaus Copernicus published *De Revolutionibus* (1543), proposing the Sun, not Earth, as the universe’s center.
latests
A)
Maya
B)
Inca
C)
Aztec
D)
Olmec
The Inca used quipus, knotted strings, as a method of recording numbers and information without writing.
latests
A)
Colombia
B)
Ecuador
C)
Peru
D)
Chile
The Galápagos Islands belong to Ecuador and are famed for their unique biodiversity that influenced Darwin's ideas.
latests
A)
Treaty of Utrecht
B)
Treaty of Westphalia
C)
Treaty of Versailles
D)
Treaty of Tordesillas
The Peace of Westphalia (1648) concluded the Thirty Years' War and established principles of sovereign states and non-intervention.
latests
A)
Niels Bohr
B)
James Chadwick
C)
Enrico Fermi
D)
J.J. Thomson
James Chadwick discovered the neutron in 1932, completing the model of atomic structure and earning the Nobel Prize in Physics.
latests
A)
Galileo Galilei
B)
Johannes Kepler
C)
Copernicus
D)
Tycho Brahe
Nicolaus Copernicus proposed the heliocentric model in 1543, stating Earth revolves around the Sun, challenging geocentric beliefs.
latests
A)
Language Relativity
B)
Structuralism
C)
Universal Grammar
D)
Pragmatism
The Sapir-Whorf hypothesis suggests language influences thought and worldview, highlighting the relativity between culture and speech.
latests
A)
Stalin
B)
Churchill
C)
Truman
D)
Roosevelt
Winston Churchill used “Iron Curtain” in 1946 to describe the political and ideological divide between Soviet-controlled East and West.
latests
A)
Rome
B)
Athens
C)
Paris
D)
London
The first modern Olympic Games were held in Athens in 1896, reviving the ancient Greek athletic tradition.
latests
A)
Yangtze
B)
Ganges
C)
Mekong
D)
Ob
The Yangtze River, stretching about 6,300 km, is the longest river in Asia and the third-longest in the world after Nile and Amazon.
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