Our atmosphere consists of___________ Oxygen approximately?

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1. The atmosphere of moon consists of______________?

   A. 90% Hydrogen, 10% Nitrogen B. 80%Nitrogen, 20% Hydrogen C. 60% Nitrogen, 40%inert gases D. None...

2. Our atmosphere consists of__________ CO2?

   A. 0.03 to 0.04% CO2 B. 0.3 to 0.4% CO2 C. 3 to 4% CO2 D. None of these Submitted by: Ameer Ali Mirani...

3. Approximately, how many times each day do our heart valves open and close normally?

   A. 10,000 B. 1,00,000 C. 1,50,000 D. 2,00,000 Submitted by: WIQAR AHMAD...

4. Approximately how many Galaxies are there ?

   A. 10 Billion Galaxies B. 100 Billion Galaxies C. 1000 Billion Galaxies D. 10000 Billion Galaxies Submitted by: FAZAL ULLAH...

5. The volume of Blood in a Human body to be approximately _________ of body weight?

   A. 6% B. 7% C. 8% D. 9% Submitted by: Ramiz Khan...

6. Air contains volume of carbon dioxide approximately?

   A. 3% B. 33% C. 0.3% D. 0.03% Submitted by: Ashfaque Ali Khoso...

7. The protein content in wheat is approximately?

   A. 8% B. 6% C. 13% D. 17% Submitted by: Ashfaque Ali Khoso...

8. The correct age of solar system is approximately __________?

   A. 4.3 Billion years B. 4.4 Billion years C. 4.5 Billion years D. None of these Submitted by: Saqlain hydar...

9. The human brain uses__________ percent of the total oxygen and blood in the body?

   A. 20 B. 12 C. 35 D. 48 Submitted by: ★ ɪʟʏᴀsɪʟᴜ ★...

10. Human beings use _______ liters of pure oxygen per day.

    A. 550 B. 2500 C. 1,050 D. 10,000 Submitted by: Muhammad Awais Tariq...