Which vitamin is essential for the clotting of blood?

What is the largest organ in the human body?

What is the term for the variety of life on Earth including all species ecosystems and genetic variation?

Which organ in the human body is responsible for pumping blood throughout the body?

Which scientist proposed the theory of evolution by natural selection?

What is the scientific study of heredity and genetic variation called?

What is the process by which species change over time through natural selection?

Which blood group is known as the universal recipient?

Which type of reproduction involves only one parent and produces genetically identical offspring?

Which blood group is known as the universal donor?

What is the term for organisms that can make their own food through photosynthesis?