What is the function of the Eustachian tube in the human ear?

Which of the following is a function of the integumentary system?

Which part of the human eye contains cells that are sensitive to light and responsible for vision?

What is the role of the pituitary gland in the endocrine system?

In the human nervous system, what is the role of neurotransmitters?

What is the primary function of the adrenal glands?

Which of the following is a characteristic of bases?

What is the primary source of energy for the Earth's climate system?

What is the primary function of white blood cells in the human body?

What is the name of the phenomenon where light is bent as it passes through the gravitational field of a massive object, such as a galaxy or cluster of galaxies?