What is the name of the bright, reddish star located in the constellation Orion and known as the "hunter's shoulder"?

In the human respiratory system, what structure prevents the entry of food into the trachea?

What is the chemical formula for sulfuric acid?

What is the process by which a star converts hydrogen into helium, releasing energy in the form of light and heat?

Which of the following is an example of a non-contact force?

What is the function of the gallbladder in the digestive system?

Which law of thermodynamics states that heat energy always flows from areas of higher temperature to areas of lower temperature?

Which of the following is a characteristic of bases?

Which layer of the Earth's atmosphere is characterized by the presence of the ionosphere and where auroras occur?

What law of motion states that for every action, there is an equal and opposite reaction?