Bharti Rani

Anurag

Asked: October 12, 2021In: Class 12 Biology

While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.

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Bhupender

Asked: October 12, 2021In: Class 12 Biology

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced.

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Arjun dayal

Asked: October 12, 2021In: Class 12 Biology

From which plant are Cannabinoids obtained? Name any two Cannabinoids. Which part of the body is effected by consuming these substances?

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Amit nagpal

Asked: October 12, 2021In: Class 12 Biology

Gene flow occurs through generations. and can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide explanation to your answer.

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Prakhar Raj

Asked: September 27, 2021In: Class 8 Science

Name the gas which is necessary for burning.

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Prakhar Raj

Asked: September 27, 2021In: Class 8 Science

Is combustion an oxidation process?

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Devinder

Asked: September 27, 2021In: Class 8 Science

What is combustible substance?

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