latests
Which river forms much of the border between the United States and Mexico?
A) Colorado
B) Rio Grande
C) Mississippi
D) Columbia
The Rio Grande (Río Bravo) forms a long stretch of the US–Mexico border, serving as a geographic and political boundary.
latests
A)
Silver
B)
Copper
C)
Gold
D)
Aluminum
Silver has the highest electrical conductivity of all elements, making it ideal for electronics, though copper is more widely used.
latests
A)
Seleucid
B)
Ptolemaic
C)
Achaemenid
D)
Macedonian
The Library of Alexandria was founded in the 3rd century BCE under the Ptolemaic dynasty in Egypt, becoming a hub of ancient learning.
latests
A)
Nuclear Disarmament
B)
Climate Change
C)
Trade Tariffs
D)
Refugee Rights
The Kyoto Protocol of 1997 aimed at reducing greenhouse gas emissions, establishing binding commitments for industrialized nations.
latests
A)
Volcanoes
B)
Earthquakes
C)
Oceans
D)
Atmosphere
Seismology is the study of earthquakes and seismic waves, helping scientists understand Earth’s interior and predict seismic risks.
latests
A)
Liver
B)
Pancreas
C)
Gallbladder
D)
Thyroid
The pancreas contains beta cells that synthesize and release insulin, regulating blood glucose levels.
latests
A)
Babylonian
B)
Greek
C)
Sumerian
D)
Hittite
The Epic of Gilgamesh is a Mesopotamian poem from Sumer, considered the world’s earliest surviving literary masterpiece.
latests
A)
Conrad Discontinuity
B)
Mohorovičić Discontinuity
C)
Gutenberg Discontinuity
D)
Lehmann Discontinuity
The Mohorovičić discontinuity (the "Moho") marks the boundary between the crust and mantle, detected via seismic waves.
latests
Lead's chemical symbol is Pb, from its Latin name 'plumbum,' reflecting historic use in pipes and construction.
latests
A)
Aryabhata
B)
Brahmagupta
C)
Bhaskara
D)
Ramanujan
Brahmagupta (7th century) formalized the rules for zero and negative numbers, laying the foundation of modern mathematics.
latests
The correct answer is 4 because 2+2=4.
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