Science Quiz / 'X','Y' and 'Z' in Natural Sciences

Random Science or Chemistry Quiz

Answers to these questions start with either 'X','Y' or 'Z'

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Fourth-longest river in Africa and home of the Victoria Falls
Real number which is neither negative nor positive
Microscopic animals that eat other plankton
Orbital period of the Earth to complete one revolution around the Sun
Sugar alcohol used as sweetener, beneficial for dental health by reducing caries
Point where the graph of a function intersects with the y-axis
Unit prefix in the metric system denoting multiplication by 10^24
Form of electromagnetic radiation with wavelength in the range of 0.01 to 10 nm
Study of the structure, physiology, development, and classification of animals
Faint, triangular glow in the night sky due to sunlight reflecting off tiny space particles
HintAnswer
Inhalation of air and the stretching of eardrums, followed by an exhalation
Partially refined uranium ore used in the preparation of fuel for nuclear reactors
Long, thick root of a tropical plant with rough brown skin, flesh eaten as vegetable
Stress level at which a metal or other material ceases to behave elastically
Horizontal axis on a two-dimensional graph
One of the eleven official languages of South Africa
Point in the sky or celestial sphere directly above an observer
Mountain in Nevada, NW of Las Vegas, site of the US nuclear waste repository
Archipelago in the Indian Ocean composing a semi-autonomous part of Tanzania
Exclusive disjunction, yields true if exactly one (not both) of two conditions is true

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