What gas do plants absorb during photosynthesis?

What is the main gas in Earth’s atmosphere?

What type of energy is produced by the Sun?

What force keeps planets in orbit around the Sun?

What is the chemical formula for water?

What is the powerhouse of the cell?

What type of rock is formed from cooled lava?

What is the smallest unit of matter?

What do bees collect from flowers to make honey?

Which planet rotates on its side?