Which one is the basic element of organic compounds _________________?

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Oxygen accounts for ____ % of totals human body mass?

A. 65% B. 18% C. 10% D. 3%...

Which treatment is instituted in a cancerous patient?

A. Antibiotic therapy B. Radiotherapy C. Gene therapy D. None of these...

A-biogenesis means that_____________?

A. Living things originated from bacteria B. Mycobionts C. Non-living things D. None of these...

Group of living organisms of the same species living in the same place at the same time is called________?

A. Community B. Population C. Ecosystem D. Biome...

Salivary glands present in front of ear are___________?

A. Sublingual B. Submaxillary C. Submandibular D. Parotid...