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Acid rain
Bacterial action
Radioactivity
Global warming
Study of life in outer space is known as
Study of parasitic organism is called
Study of the effects of toxic chemical substance on animal and plant is
Study of typical behaviour of organisms in their natural habitat is called
Synapse gap is present between which of the following?
Syrinx is the voice box in
Teeth is mainly made up of
Test tube baby means
Tetanus is caused by
Thalassemia is a hereditary disease. It affects