For which of the following organisms there is no natural death ?

Which of the following organisms was used to establish the semi-conservative nature of DNA?

Which of the following organisms was used to establish the semi-conservative nature of DNA?

Which of the following is involved in early death of insects ?

In which one of the following the birth rate is high & death rate is normal

Which of the following anaphylactic shock may cause death?

Which of the following event of organic evolution was a turning point that changed the nature of atmosphere of primitive earth?