science
What is the chemical symbol for water?
H2O
What planet is known as the Red Planet?
Mars
What gas do plants primarily use during photosynthesis?
Carbon dioxide
What is the main organ responsible for pumping blood in the human body?
Heart
What force keeps objects on the ground?
Gravity
Which element has the atomic number 6?
Carbon
What type of energy is produced by a moving object?
Kinetic energy
What is the hardest natural substance on Earth?
Diamond
What is the process by which plants make their own food?
Photosynthesis
What is the center of an atom called?
Nucleus