What gas do plants absorb from the atmosphere for photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is the boiling point of water in degrees Celsius?

• 0°C

• 50°C

• 100°C

• 200°C

What planet is closest to the sun?

• Earth

• Venus

• Mars

• Mercury

What part of the cell contains genetic material?

• Mitochondria

• Nucleus

• Ribosome

• Cell membrane

How many legs do arachnids have?

• 6

• 8

• 10

• 12

What is the chemical formula for water?

• H2O

• CO2

• O2

• NaCl

Which planet in our solar system has the most moons?

• Mars

• Jupiter

• Saturn

• Uranus

Which element is essential for making bones and teeth strong?

• Iron

• Calcium

• Potassium

• Sodium

Which organ in the human body produces insulin?

• Liver

• Pancreas

• Heart

• Kidney

What is the most abundant gas in Earth's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen