Practice LAT questions with answers and explanations.
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A water molecule contains two hydrogen atoms and one oxygen atom.
Its formula is H₂O.
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Common salt is sodium chloride.
Its chemical formula is NaCl.
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Human cells use oxygen in cellular respiration.
The process releases energy from food molecules.
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Solar radiation drives weather, climate, and photosynthesis.
Other energy sources are much smaller for the surface system.
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Wind turbines convert the kinetic energy of moving air into electricity.
It is a renewable energy source.
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Carbon dioxide is a major greenhouse gas released by fossil-fuel use.
It traps heat in Earth's climate system.
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Vasco da Gama reached India by sea in 1498.
He sailed around the southern tip of Africa.
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Vitamin D deficiency can impair bone mineralization in children.
The resulting condition is called rickets.
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Magellan's expedition achieved the first circumnavigation.
Magellan died before the voyage was completed by Juan Sebastián Elcano.
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Iron is a key component of hemoglobin.
Insufficient iron can lead to iron-deficiency anemia.
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The Silk Road was a network of overland and maritime routes.
It carried goods, ideas, and technologies across Eurasia.
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Specialized cells in the pancreas produce insulin.
Insulin helps regulate blood glucose.
