Why a lobster blood is colorless but when exposed to oxygen it turns blue?
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what is eutrophication
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What makes children of aged 3 yrs tab a persistent coughing especially at night
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what is the cause of pimples on ppls faces? (1 comment)
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Can HIV and AIDS be genetically inherited? (1 comment)
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what is the cause of pimples on ppls faces? (1 comment)
Why is it advisable for pregnant women to have sex until six months? (1 comment)
Can HIV and AIDS be genetically inherited? (1 comment)
what makes a person to loose sight apart from accidents? (1 comment)
What are importance of heartbeat in blood circulation? (1 comment)