Which gas is most abundant in the atmosphere?

argon

oxygen

carbon dioxide

nitrogen

Btw this is a science question

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Television screen size are the diagonal lenghth of the rectanglar screen. Hector recenty changed from watching a television with 13-inch screen to similar 19-inch screen.

What does poop mean in my dads urethra

Suppose that in 30% of married couples the husband smokes, while in only 20% of the married couples the wife smokes. Finally, it is estimated that in 8% of the married couples the husband and the wife smoke. Suppose a random couple is selected.

Explain how to determine the number of protons and electrons in a atom of a specific element

What overall percentage do you need to pass a grade (I'm a freshman btw)

A North American Hummingbird's wings beat. approximately 53 beats per second. How many beals will the hummingbird's wings beat in one minute?

Think about one of your current friendships or relationships. in three to five complete sentence, describe whether it is a doormat, black hole or strong giver relationship

Which best describes how graphs are used in science? 1. A graph model data 2. A graph is a type of map 3. A graph show small-scale objects 4. A graph show large-scale objects

What would you tell a friend who tells you, "I'm just not that interested in applying for scholarships. It sounds like so much work and I probably don't have a good chance of getting the scholarship anyway!"