Oxygen
Carbon Dioxide
Nitrogen
Hydrogen
Helium
Correct answer is A
Oxygen is essential for human respiration as it supports cellular energy production.
Which ancient civilization built the Machu Picchu?...
Which movie features the character Shrek?...
Which part of the ear is responsible for balance?...
Which U.S. President warned against political parties in his farewell address?...
How do you enable low data usage for WhatsApp calls?...
What is a common tool used to tighten nuts and bolts?...
Which plant is used to produce the beverage "green tea"?...
Which company manufactures the gaming console Nintendo Switch?...
What is the maximum cruising altitude of most commercial jets?...
How do you enable public comments on Snapchat Spotlight posts?...