Earthquakes are caused by:
Earthquakes are caused by:
A. Landslide
B. Eruption of volcanoes
C. Tectonic plates
D. All of these
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Enology is the study of____________?
Enology is the study of____________?A. Wine
B. Digestion
C. Kidneys
D. NoneMost of the weather phenomena take place in which of the following layers of the atmosphere?
Most of the weather phenomena take place in which of the following layers of the atmosphere?A. Mesosphere
B. Ionosphere
C. Stratosphere
D. TroposphereThe sun is made up of 99.9% of ________________ and ______________?
The sun is made up of 99.9% of ________________ and ______________?
A. Oxygen and Hydrogen
B. Hydrogen and Sulfur
C. Carbon and Silicon
D. Hydrogen and HeliumWhich animal has no vocal chords ?
Which animal has no vocal chords ?A. Lion
B. Zebra
C. Dolphin
D. GiraffesGiraffes do have a larynx (voice box), but perhaps they couldn’t produce sufficient airflow through their 13-foot long (4 meter) trachea to vibrate their vocal folds and make noises. The researchers suspected the reason no one heard giraffe communication was because the sound frequency was too low for humans to hear.
Circadian Rhythm refers to _____________?
Circadian Rhythm refers to _____________?
A. Planetary movements
B. Formation of galaxies
C. Human body cycles
D. CalisthenicsThe brightest colour emitted by the sun is:
The brightest colour emitted by the sun is:A. Violet
B. Yellow-Green
C. Green- Blue
D. Red