Which element is the primary component of natural gas used for cooking and heating?

Which everyday phenomenon explains why a metal spoon feels colder than a wooden spoon at the same room temperature?

Which device measures atmospheric pressure and is commonly used for weather forecasting?

Which cold-blooded animal group is covered in scales breathes air through lungs and lays eggs on land?

Which naturally occurring radioactive element was discovered by Marie Curie and named after her home country?

Which fluid cushions and protects the brain and spinal cord from mechanical shock?

Which membrane surrounds the lungs and reduces friction during breathing movements?

Which layer of the atmosphere contains the ozone layer that absorbs harmful ultraviolet radiation?

Which everyday principle explains how blood pressure monitors measure pressure in the arteries?

Which part of the human ear is primarily responsible for maintaining balance?

Which type of joint is found in the skull where bones are fixed together and allow no movement?