What planet is known for having a tilted rotation axis?
Which gas is most abundant in the Earth’s atmosphere?
What force keeps us on the ground?
What is the chemical symbol for water?
What is the center of an atom called?
Which organ pumps blood through the body?
What part of the cell contains DNA?
What gas do plants absorb from the atmosphere?
What vitamin do we get from sunlight?
What is the process by which plants make food?
