*Question*
Answer the following question given this paragraph: Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure below ). The cycling of carbon occurs through the carbon cycle . Q: Which common element is the most found in living organisms? Choices: - hydrogen - oxygen - monoxide - carbon A:
**Answer**
carbon

*Question*
Answer the following question given this paragraph: Q: What functions as a framework that reinforces the shape of the leaf? Choices: - the normal structure - the central structure - the stylised structure - the vascular structure A:
**Answer**
the vascular structure

*Question*
Answer the following question given this paragraph: Male reproductive structures include the penis, testes, and epididymis. Q: What is the third male reprodutive structure after the penis and testes? Choices: - clitoris - scrotum - anus - epididymis A:
**Answer**
epididymis

*Question*
Answer the following question given this paragraph: Oil is a thick, dark brown or black liquid. It is found in rock layers of the Earth's crust. Oil is currently the most commonly used source of energy in the world. Q: What is the most commonly used source of energy in the world? Choices: - electricity - wind - water - oil A:
**Answer**
oil