Where does the eustachian tube lead to

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Why can't you grow plants with adhesion water?

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions