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Country in Southeast Asia.

Subregion in Northern Europe.

A neurological event that occurs when the blood supply to the brain is blocked, depriving the tissue of oxygen, or when there is a bleed into the brain due to the rupturing of an artery.

A selection (subset) of data from a larger group of data (the population).

Collecting representative data from some members of a population, to help understand the larger population.

A cartilage wall separating the nostrils of the nose.

A group of organisms that can reproduce with one another in nature and produce fertile offspring.

Speed is a measure of the rate of change of the distance traveled by a moving object. (Formula v = d/t - velocity = distance/time).

Country on Europe's Iberian Peninsula.

The gravitationally bound system of the Sun and the objects that orbit it, including planets, moons, dwarf planets, asteroids, meteoroids, and comets. Our planetary system is named the "solar system" because our Sun is named Sol.