Oxygen
Carbon Dioxide
Nitrogen
Methane
Hydrogen
Correct answer is B
Carbon dioxide is essential for photosynthesis in plants.
What is the official language of Singapore?...
Which company is known for manufacturing the Galaxy series of smartphones?...
Which is the longest river in Africa?...
What is the main purpose of Twitter’s "Lists" feature?...
Which of the following is an example of a healthy snack?...
How do you tag multiple people in a Facebook photo?...
Which actress voiced Elsa in Disney’s "Frozen"?...
What does the term "Bio" refer to on Instagram?...
Which plant is known for its medicinal properties and is used to treat cuts and burns?...
Which video game franchise features races with customizable karts?...