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What planet is known as the Red Planet
What force keeps us on the ground so we don’t float away
Gravity
What gas do humans breathe in to stay alive
Oxygen
What part of the human body pumps blood?
What is the hardest natural substance on Earth
Which planet is the largest in our solar system
Jupiter
What is the process by which plants make their own food using sunlight
Photosynthesis
What is H₂O commonly called?
Water
How many bones does an adult human body usually have
207
What organ helps you breathe in oxygen
Lungs