General Science
Which scientist introduced Ecological pyramids ?
Charles Elton
Charles Darwin
Charles lyell
Charles Chaplin
Charles Elton
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Which of the following rays has highest energy?A. Gamma Rays
B. Radio waves
C. Ultra-violet-rays
D. X-rays
Which of the following is an air-borne disease?
A. Measles
B. Pink eyes
C. Typhoid
D. Cholera
Which is the thinnest layer of earth?
A. Core
B. Mantle
C. Crust
D. None of these
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