Basics

A salty taste in the mouth can be caused by dry mouth, dehydration, sinus infections, or certain medicines. See a doctor if it lasts. Common causes Dry mouth.

Feeling that way is painful. Conflict and stress can make it hard to feel your parent’s love, and talking with a trusted adult or counselor can help.

Fire alarms beep when the battery is low, the unit is old (usually after 10 years), or it is malfunctioning, or when it detects smoke. Common reasons Low

Premium economy offers more legroom, wider seats, and better service than economy, at a lower price than business class. Economy Standard seat, usually

Customer service is the help you provide in individual interactions, while customer experience is the overall impression across every touchpoint.

Nuclear fission splits heavy atoms to release energy, as in nuclear power plants, while fusion combines light atoms, as in the Sun. Fission Splitting a

A car AC compressor circulates refrigerant that absorbs heat from the cabin through the evaporator and releases it outside through the condenser.

Facebook suggests friends based on mutual friends, contacts, groups, schools, workplaces, and activity. Signals used Mutual friends. Contacts you uploaded.

Peeing a lot can be caused by drinking lots of fluids or caffeine, a urinary tract infection, diabetes, or an overactive bladder. See a doctor if it persists.

Call 911 immediately. Keep the person calm, give aspirin if the dispatcher says to and they aren’t allergic, and start CPR and use an AED if they