Which gas do plants use for photosynthesis?

What is the main function of red blood cells?

Which part of the plant is responsible for reproduction?

Which gas is essential for human survival?

Which disease is caused by a lack of Vitamin C?

What is the normal body temperature of a human in Celsius?

Which human organ is responsible for filtering blood?

Which of these is a communicable disease?

Which hormone regulates blood sugar levels?

Which process helps plants lose excess water?