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

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1. 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...

2. 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...

3. Air contains volume of carbon dioxide approximately?

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

4. The protein content in wheat is approximately?

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

5. Our atmosphere consists of___________ Oxygen approximately?

   A. 11% Oxygen approximately B. 21% Oxygen approximately C. 31% Oxygen approximately D. None of these Submitted by: Ameer Ali Mirani...

6. 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...

7. Which layer of the atmosphere lies close to the earth?

   A. Stratosphere B. Mesosphere C. Troposphere D. Thermosphere Submitted by: Ali Mallah...

8. Comets are made mostly of ice and dust. As comets get close to the sun, they start to “melt” and release what?

   A. Steam and dust B. Gas and dust C. Steam, gas and dust D. None of the above Submitted by: Muhammad Abdullah...

9. As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what?

   A. “coma” around the comet’s nucleus and a long tail that points away from the sun B. “coma” that points away from the sun and a long tail around the comet’s nucleus C. Only “coma” around the comet’s nucleus D. Only a long tail that points away from the sun Submitted by: Muhammad Abdullah...

10. NASA’s _________ is currently studying the sun up close.

    A. Darker Solar Probe B. Walker Solar Probe C. Parker Solar Probe D. Falkner Solar Probe Submitted by: Muhammad Abdullah...